Tournaments are available on the PTCGO! Three tournaments are available 24/7 and weekends occasionally change one of 'em to a 5-ticket fee tournament (with formats changing every week). You can find the prize structure in the TCGO client when they're available.

We're done with the first weekend of Roaring Skies prereleases and the coming weekend is the last batch of 'em! Are planning on attending one?

Daily quests added to PTCGO, remember that the Theme format is your friend when it come to Challenges!

The in-client store's card-related products consists of theme decks (LTR-on) and 5-card packs (NXD-on). Every now and then, products mimicking IRL value products like boxes and blisters are available for a short time.

The best decks for beginners and theme deck tournaments are still as follows (But not in terms of consistency)...

>Yveltal/Xerneas Battle Pack
>Red Genesect Collection (not available in the TCGO)
>Resilient Life
>Psy Crusher
>Destruction Rush
>Dark Hammer
>Ocean's Core
>DragonSpeed

Any starter deck released before LTR cannot be found on the in-client shop and must be redeemed from a code card.

PTCGO client:
>http://www.pokemon.com/us/pokemon-tcg/play-online/download/

Decklists from Worlds:
>http://www.pokemon.com/us/play-pokemon/worlds/2014/decks/popular/

News for TCG:
>http://pokebeach.com/

Standard Legal card list:
>http://pokegym.net/forums/view.php?pg=stdformat

Tier list for Tournament-level decks with skeleton lists:
>http://www.pokebeach.com/forums/forum-metagame-deck-discussion

Your old cards aren't worth shit don't ask. To learn what your digital cards are worth, look for the Top Cut thread on the PTCGO forums in the trading section. Your pack codes are worth about 25-30 cents while other codes are worth around a dollar or two.