By going to jail because It's been happening lately to people who hack steam.
Some websites where you can buy Steam Wallet Cards, crazygametime: http://crazygametime.com/shop/32-steam-wallet-cards, $5, $10, $20, $50 offgamers: http://www.offgamers.com/steam-wallet-card/steam-wallet-card-us/steam-wallet-card-us-c-17633-17634-17635.ogm, $20, $50
The Steam Wallet is a digital wallet that allows you to store funds for purchasing games, software, and other digital content on the Steam platform. It's a convenient way to add funds to your account and make purchases without using a credit card each time. 😊🎮
You need steam to install Portal 2 Why not? It's free
If you have purchased the game on Steam then you need to install Steam on that PC and there should be an install button on the game in your Steam Library. If you have the disk version you just have to put in it and install it using the CD key that came with it.
Yes
You can't. Sites which offer "free codes" are usually scams that log your password or download a virus onto your PC. You will also be banned from Steam for attempting to gain illegitimate wallet codes. Since steam wallet codes have monetary value, attempting to gain them without being gifted or buying them yourself is an act of fraud. Fraud is illegal and can result in jail.
In the games tab, click "Activate a product on Steam..." to install the game if you have the CD. If you bought the game from Steam, you should see it on your games list. Right click it and install it.
If you bought the game from steam, no. and if your trying to put a game on your computer and it keeps adding to steam, than un-install steam while your trying to install the game.
Steam
The Steam client can be downloaded from their official website, linked below.
Cool I just got a free Steam Wallet code at steamwalletcodes.com
if you have steam you can install it from there but if not you will manually have to place the files in the correct place