@maze
There isn't really a concise tutorial right now (I know one of the lead players is working on a thorough video guide but it'll take a while).
I recommend getting yourself familiar with how the pieces move, playing a few puzzles, then watch these two outdated-yet-still-good videos:
https://www.youtube.com/watch?v=-pjyOPTIwLM
https://www.youtube.com/watch?v=HkDq5fejbvI
#5dchess #learn_5D_chess