New? Check the pastebin for advice on starting the game, client information, a guide on the various theme decks/products you can redeem in-game and more.
>http://pastebin.com/3NHFJ7FN

Want more Meta decklists/skeletons?
>http://www.pokebeach.com/forums/forum/tcg-competitive-play.156/

News/Legal List/Set scans/etc
>http://pokebeach.com/

Your physical cards probably aren't worth shit, but check sites like Trollandtoad, eBay and TCGplayer for the shinier ones to see if you can make a decent 5-10 bucks off them before you ask in the thread. We don't have the prices memorized for every single bulk rare you post and if you had anything worth shit, you probably would've been winning tournaments with it and knowing its value.

To see what your PTCGO stuff is worth, look on the PTCGO forums in the trading section. For example, Top Cut Trading inc
>http://forums.pokemontcg.com/topic/25163-the-top-cut-trading-inc-2/

Pack codes are worth about 15-30 cents while other codes are worth around a dollar or two.

Remember that if you're doing a TCGO code dump, post them as images and block off the QR codes. This prevents scumbags from scooping up the entire lot with client's QR reader or, in the case of typed codes, copypasting the codes onto the redemption page.

Pastebin updated for the two new decks from Roaring Skies.