So you've picked a game. You have a group of players. You've all picked a day and time to play. So...how do y'all actually play?? Hopefully this tab will help give you some resources to make running your first (or 31st) game a little bit easier and more fun.
A note on playing online: sites like Discord and Roll20 are free to use, and can be great ways to play online. There's a bot called Avrae that can be added to Discord, which will connect to a character sheet from Dndbeyond, Google Sheets, or Dicecloud. It's also a dice roller, so no physical dice required! Plus, if a character sheet is linked, Avrae will add in any bonuses for the player. Both Discord and Roll20 have the option to share screens/video, as well as use audio and text chat, so it can be a pretty adaptive experience to get everyone playing in one program.
These are a few books in the SAPL catalog that can help teach skills related to running or playing a TTRPG, no matter what system you're using or how you're playing.