Question: How does the season begin on Barney?
About the article "How I Met Your Mother", section "Season 3".

Candidate passages:
  "Episodes : Pilot to Last Forever" Barney Stinson.
Barnabus "Barney" Stinson (born 1976), played by Neil Patrick Harris, is a former womanizer, favors suits, enjoys playing laser tag and performing magic tricks often involving fire, and frequently uses the words "awesome" and "legendary," which Ted believes he uses too liberally.
Barney is very eager to prove his "awesomeness" by doing things his friends inadvertently suggest (normally something they find ridiculous), prompting him to say his other coined phrase "challenge accepted".
Barney is the writer of the Bro Code (though he claims it was written by Barnabus Stinson in the Colonial Era) and the Playbook, from which he documents his favorite moves to use on women.
Barney was raised by a single mother, along with his older brother James.
He spent very little time with his father when he was a child.
In season 6, Barney's father Jerome, returns to his life hoping to make amends for abandoning him as a child.
Barney was engaged to a woman in college, a woman who rejected him because of his lack of success and her lack of desire for commitment.
Barney still fears committing to another woman.
When she broke up with him (leaving him still a virgin), his black, gay brother James Stinson arranged for him to lose his virginity with "the Man-Maker".
She claimed he was awesome (as a favor to Barney's brother) which ignited Barney's unlimited confidence.
Prior to losing his virginity, Barney was a long-haired hippie with plans to join the Peace Corps.
Soon after his rejection, he saw a flier for a sale on suits, thus beginning his suit addiction.
Shortly after he met Ted Mosby in the Men's room and announced to that he would "teach Ted how to live," beginning his life with Ted's group of friends where he remains.
Barney believes himself to be Ted's best friend.
In season 4, Barney realizes he has fallen in love with Robin and spends the next season hiding it from her.
The two get together in season 5, but the relationship only lasts for 7 episodes.
After their breakup, Barney returned to his womanizing ways, but sometimes shows regret in ending his relationship with Robin.
In season 6, Robin introduces him to her friend Nora.
Barney first denies that he is attracted to her, but later admits to Robin that he is.
Barney and Nora's relationship is short lived, however, because Barney is unwilling to let himself be honest with her about his feelings.
In the sixth season finale, it is revealed that Barney may be getting married a little ways in the future, a scene which includes Barney, Ted, Lily and Marshall and does not reveal who the bride is.
He decides to give his relationship with Nora a second chance, but it ends when he cheats on her with Robin.
The two agree to leave their respective partners, and reevaluate their relationship, but at the last minute, Robin decides to stay with her boyfriend, leaving Barney alone once again.
Barney has slept with over 283 women.
Its revealed in the season 7 finale that Barney marries Robin, but they end up divorced after three years.
After a successful attempt at a "perfect month" (a nod to season five's "Perfect Week") results with the last woman (known only as #31) being impregnated, Barney finally sheds his playboy reputation once and for all with the birth of his daughter, Ellie.
Barney's job at Altrucell Corporation (which acquires GNB in season 4) is a source of mystery throughout the series.
It is finally revealed in season 9, while Barney is in a rare state where he is just drunk enough to tell the truth about everything, that his position makes him a fall guy for Altrucell should the company ever be investigated over its questionable business practices.
However, Barney recognized this immediately, and made a deal with the Federal government to be an informant within his company. 
In the season 6 episode, "Desperation Day", Barney meets Nora, Robin's coworker at World Wide News.
He is immediately attracted to her, and lies that he wants to settle down as a ploy to get her into bed.
When she presses him to make a commitment, he mocks her romanticism as "desperate"; hurt, she breaks up with him.
Robin claims that Barney is beginning to like Nora, which he denies.
Robin later invites Nora to play laser tag with Barney, and he soon goes on his first ever Valentine's Day date with her.
In the next episode, "Garbage Island", Barney tells the gang that his date with Nora went well, but he is not going to call her.
Robin catches Barney smiling whenever he mentions Nora, and gives him a napkin with Nora's phone number so he can call her.
Robin eventually dares him to sleep with her to prove he does not like Nora.
Barney shows up at Ted and Robin's apartment, which infuriates Robin because she had been encouraging him to pursue Nora.
However, Barney reveals he had actually come to ask for Nora's phone number; pleased, Robin gives it to him and tells him to go for it.
In "A Change of Heart", Barney and Nora are about to go on a date when he catches a cold, and she nurses him back to health.
Later when they go on their date, Nora tells him that she wants to settle down and he says he wants to, too.
Barney also blackmails the group into lying to Nora in order to play himself up.
Nora returns and tells the gang that her parents are in town and invites Barney to meet them at brunch the next day.
However, Barney later revealed to Nora that he was lying about wanting to get married and criticized her for telling the other person in a relationship exactly what to expect to happen.
In response, Nora slaps him.
Later Barney realizes that he really wants to settle down with Nora, and is about to tell this to Nora in front of her parents, but chickens out.
In "Challenge Accepted", Barney bumps into Nora and asks her for a cup of coffee when Robin pressures him.
In the season 7 premiere episode, "The Best Man", Barney gets a call back from Nora after he called her five times, and with Robin's help she agrees to meet him.
In "The Naked Truth", Barney meets Nora with a neck-brace to get sympathy from her, but she instantly realizes he is lying.
She asks him to tell her every lie he told in order for women to sleep with him.
When Nora is about to leave, disgusted, he asks her if he can call her, and she asks him how he thinks he still has a chance with her.
Barney says that it's because she sat through the date, and he wants to change for her.
He also says to prove he isn't lying, he won't leave the diner until he gets a second date with her.
Barney stays at the diner for hours and even sleeps there and wakes up to see Nora standing in front of him.
After that, Barney and Nora become a full-fledged couple.
In the episode, "Tick Tick Tick", Barney cheats on Nora with Robin and confesses his infidelity, but cannot bring himself to say that it meant nothing.
They then break up, as Barney now wants to pursue a relationship with Robin. 
"Days of Wine and D'oh'ses" is the eighteenth episode of the eleventh season of the American animated sitcom "The Simpsons".
It originally aired on the Fox network in the United States on April 9, 2000.
In the episode, Barney realizes how much of a pathetic drunk he is after watching his birthday party video and decides to give up alcohol forever, which does not sit well with his friend Homer.
Meanwhile, Bart and Lisa work together to take a memorable photo for a new phone book cover contest.
The episode was written by cast member Dan Castellaneta and his wife Deb Lacusta.
Several staff members opposed the idea of Barney becoming sober because they did not think a sober Barney would be funny.
Several critics, including Chris Turner, have also criticized the character's change. 
Season seven opens with another flash forward, in which Ted is helping Barney get ready for his wedding to a still unknown bride.
In the present, Marshall gets a job in environmental law while Lily progresses with her pregnancy.
Barney proves to Nora that he can be a good boyfriend to her, while Robin is revealed to still have feelings for Barney.
Robin meets a therapist Kevin (Kal Penn) and they start to date.
Meanwhile, after a period of unemployment since leaving GNB, Marshall finally manages to land his dream job at a top environmental law firm.
After losing a bet, Barney is forced to wear a tie with a duck pattern on it (nicknamed the 'Ducky Tie') which he hates.
Marshall allows him to take it off when meeting Nora's parents on the condition that Barney has three slaps added to the one still remaining from the Slap Bet.
Marshall uses two slaps immediately, leaving two left.
While reminiscing about Hurricane Irene, Lily and Marshall reveal they conceived their baby in Barney's apartment, and Barney and Robin end up sleeping together.
Barney and Robin decide to break up with their partners, but Robin reneges on the deal, returning to Kevin and leaving Barney alone and heartbroken.
Robin has a pregnancy scare at Thanksgiving and tells Barney the child is his, since she and Kevin had not yet slept together.
However, Robin's doctor informs her that she cannot have children at all.
Kevin, who wants children, proposes to Robin who decides that the pair must break up.
Ted comforts Robin and reveals he still loves her, but the gesture is unrequited.
Marshall and Lily decide they want to move to Long Island, after Lily's paternal grandparents offer them their house there.
Eventually, they move back to the old apartment in New York City after realizing suburban life is not for them.
Ted gives them his apartment because he believes he cannot move on from Robin while living there, while he and Robin become estranged and do not speak for several weeks.
Robin is eventually offered a news anchor job and subsequently achieves recognition after preventing a helicopter she is flying in from crashing.
Barney starts dating a stripper named Quinn, to the group's initial apprehension.
The gang begins to meddle in their relationship, but Barney and Quinn outsmart their attempts and win their approval.
Quinn moves in with Barney, while Ted buys Quinn's old apartment.
Lily goes into labor and frantically calls Barney and Marshall, who are out at a casino.
After many attempts to escape, Barney helps Marshall arrive in time for Lily's delivery and chooses the middle name for the baby, Marvin Waitforit Eriksen.
Ted and Robin's friendship also recovers as a result of Marvin's birth.
As the season concludes, Marshall and Lily begin their new family with their baby, Barney proposes to Quinn, and Ted contacts his old girlfriend Victoria.
Unhappy with her own impending marriage, she leaves her fiancé for Ted and the pair drive off into the sunset.
A final flash forward returns to the day of Barney's wedding, where Robin is revealed as the bride. 
 Episode 17: "The Return of Barney Fife" Episode 18: "The Legend of Barney Fife"