Userpage

The user page is one's own profile. One can earn energy points, and every day that Khan Academy is used to accrue points, the daily streak increases by one which is reflected on the user page.You can earn energy points, and the total of those energy points will be on the upper right of the profile page.
There are also badges, some of which give energy points and/or require energy points. The most common badges are Meteorite badges. The first badge one earns is usually Makes Perfect or Apprentice Programmer. 
There is an image of a user profile here->