Very different from the simplistic mini-game in Witcher 3.
Where can I get a Closed Beta key?
Here you go:
On release the game is planned to have a 10 hour single player campaign which costs money but rumors say it's gonna be CDPR level of quality. (Rich story, 100% voice acting, meaningful choices etc.)
Other than that much of the game's F2P structure is copied from Hearthstone but more rewarding and more streamlined.
There will be a wipe when the game enters open beta but you do get to keep some things:
Other than converting the rank to packs after the wipe, the rank reward themselves are pretty generous.
Website for decks and guides etc.:
When you open a pack, the "minimum 1 rare or above" slot let's you pick between 3 cards. Which ones do you choose?
Use tier lists, and look at popular decks on gwentdb and gwentify's meta snapshot
But be careful that there's a big balance patch coming soon which will make these lists inaccurate
, so before you craft anything, it's better to wait for the upcoming stream on March 14th and see what's up. Northern Realms and Nilfgaard are getting revamped and Nekker based monster decks are getting nerfed, from what is known so far.
In general the most cost effective cards to craft are epics (purple square in the corner) which are as crucial as the legendaries if not more, but with the crafting cost of one legendary you can craft 4 epics. So usually it's best to be patient until you get 1 legendary in a pack which is useful for a strong deck archetype, pick it between the 3 and then craft the epics needed for that specific deck. Also don't craft Ciri (the epic) and Decoy as you get them for free in levels 18 and 20. In any case if you have no idea what legendary to pick from a pack you can always ask knowledgeable players before picking.
Also remember that you can have up to 3 copies of the same bronze framed card but only 1 silver and 1 gold, so once you get a specific silver or gold, it won't benefit getting another copy of it.