Summarize the following:
Although many airlines allow you to check in and print your boarding pass online (if you're not checking luggage), you can also choose to do so in person at the airport. Enter the airport in the section of your airline carrier, and locate their counter. When you get to the front desk, simply tell them your name and give them ID, and they should automatically print your boarding pass and ask about checked luggage. If you have multiple flights due to layovers, ask the attendant to print your boarding passes for all flights. Some do this automatically, but it is good to ask if they don't. Checked luggage must typically weigh less than 50lbs and costs about $25 to start. This varies from airline to airline though, so check your specific airline's requirements online. If you don't want to worry about checking bags, you are allowed one carry on item and one personal item - one that goes under the seat in front of you, and one stored in the overhead bins above your seat. Ask the gate attendant if your bags are small enough to bring with you as carry-ons. If you print your boarding pass online and are not checking luggage, you can bypass stopping by the airlines counter. If you have your boarding pass in hand and your carry-on luggage prepared, you can head to security. Have both your boarding pass out and a form of ID - either your driver's license or your passport (it must be your passport if you're heading out of the country) - readily available. A TSA agent will check your boarding pass to your ID, and then you must successfully pass through the security check. All of your belongings will need to be placed in bins and sent through an x-ray machine while you are being checked over in a separate machine that is able to scan the body or being examined by a wand scanner (for those with known medical devices). Airports are very picky about security, but they will also be very vocal about it. Check for signs about what to do in order to successfully pass through security, and if you're still not sure ask someone for help. Liquids and laptops must be in their own bins separate from other items. Any items (including gum and unused gum) that are found in your pockets must be placed in the bins to be scanned by the x-ray. Also, all airports will want you to place any metal objects in the bins as well (and that includes metal earrings and jewelry). Some security checkpoints require you to remove your belt, shoes and jackets; look for signs to see if your airport does as well. Some airports may ask you to remove your socks as well, but this varies. A TSA agent will guide you through the process if there happens to be an issue with something in your luggage or on yourself. Get your bags re-packed and put your shoes back on so that you can go wait for your plane in the correct terminal! Check your boarding pass for your terminal (typically a letter) and your gate (a number). There should be plenty of signs directing you to this area, but if you can't seem to locate your gate and terminal, simply ask an airport or airline employee for help. If your boarding pass does not have the terminal number (and very few don't these days), find a monitor with the flight schedules and check that instead. It's always good to arrive at the airport early so that you have time before boarding the plane, just in case you need it. Run to the bathroom, grab something to eat, or use your last few minutes of freedom to connect to the airport Wi-Fi. Boarding the plane typically begins half an hour before takeoff, so you may have plenty of time to kill. Be careful not to stray too far from your gate so that you don't miss an important announcement about your flight or early boarding opportunities. If you want, you can speak to a flight attendant at the counter of your gate about changing your seats. This is the only opportunity you have to grab a different seat or to upgrade to business or first class.

summary: Print your boarding pass and check your luggage. Head to security. Find your gate/terminal. Hang out and wait for your plane.

Summarize the following:
Every new bitcoin that comes into existence is the product of a previous transaction. The only way to get bitcoins when you don't have any is by receiving them in a transaction from someone else, buying them for cash, or by mining new bitcoins. For more information on receiving bitcoins, see how to receive bitcoin. If you know someone who currently uses Bitcoin, you may request that that person sends you a predetermined number of bitcoins. If you do not know anyone who uses Bitcoin, you may receive bitcoins by offering some type of transaction with other Bitcoin users, and you will be paid in bitcoins. The other option is to "mine" for bitcoins. If you cannot get bitcoins from anyone else in the Bitcoin network, you can earn them by mining for them. Mining simply means that you solve a complex mathematical puzzle which helps verify other people's transaction histories, and in return you're awarded with free bitcoins. It's free to receive bitcoins, but you'll typically pay a fee for sending them in a transaction. However, mining is an expensive and very complicated way to get bitcoins at this time and not practical for most people. For more information on mining, see how to mine bitcoins. . If you do not know anyone on Bitcoin, do not have anything to sell, and do not want to mine for new bitcoins, you can buy bitcoins through the network. This can be done in one of three ways: Buy bitcoins from a person - you can purchase bitcoins through person-to-person marketplaces and pay with cash (in person or deposit), bank transfers, money wires, PayPal, and other methods. The trick is finding someone trustworthy, so it may be worth using an escrow service (such as CoinCola or LocalBitcoins) to protect yourself against fraudulent offers. OTC platforms usually also allow you to a upload an ID proof. For added security during your trades, you may require the ID proof of your trading partner. Buy bitcoins from an exchange/outlet - exchanges and outlets is essentially on online service that either facilitates transactions between users (exchange) or sells their own accrued bitcoins directly to customers (outlet). You'll need to create an account and have your identity verified before you can use an exchange or outlet. Buy bitcoins through an ATM - you can purchase bitcoins from a physical Bitcoin ATM using cash, though many bitcoins are one-directional and only allow you to either buy bitcoins or trade them for cash. Many government regulations dictate whether an ATM can be installed and where, so finding an ATM near you may be difficult.
summary: Sell products or services for bitcoins. Mine for bitcoins. Buy bitcoins