Magic the Gathering is my favorite game. It is, in my opinion, also the best game that currently exists due to its depth, history, and ability to be so many different games within a single system of mechanics. It also has a very high learning curve, so I've included some of my favorite resources:
Scryfall is the best card search engine. MTGPics is great for finding scans of magic art. Moxfield or Archidekt are both great websites to store decklists online. EDHRec is great for finding card ideas to include in a Commander deck. MTGGoldfish is similar for 60-card competitive formats, it has metagame lists and content. CubeCobra is the same but specifically designed for cubes.
Where do you get cards? I personally use Manapool, but there are many options. TCGPlayer is the default for many people, but I no longer shop with them after they engaged in union busting in 2025.
Here's a showcase of my favorite decks that I've built, including writeups and a link to the most current decklist I have.
