New player looking for learning resources + beginner-friendly meta deck advice

Yo guys, total newbie here in the world of TCGs
I played a bit of One Piece (Purple Enel) before, but recently I went to the Unleashed pre-release and honestly had a blast (3rd place - dunno how), so now I kinda wanna get into the game properly.

Right now I’m mainly looking for:

1.Good resources to actually learn the game better (YouTube channels, sites, Discords, deck guides etc.)

2.Recommendations for a solid meta deck for a beginner

3. Which online simulator do you find better and how can i learn how to use it properly?

Budget honestly isn’t really a problem I mostly just want something that actually works and can compete. Although if possible, maybe not the most giga-complex deck in existence

Also one more thing:
Would you guys recommend buying a box of Spiritforged and Unleashed before building a deck, or is it just smarter to buy singles immediately?

Any advice appreciated