There is no fast/easy way to learn unfortunately. just takes time. just staring at a type chart is probably the most boring thing you can do, but uhhh i got nothin better so you do you.
as far as learning resources go tho, youre much better off looking outside mmo for the basics. for like, building and meta analysis its gotta come from this community because were so..... unique :^) , but the basics are the basics, regardless of what generation/meta/tier, and best learned elsewhere imo. the way i see it theres 2 ways to learn; play and watch other people play. go grab a sandwich and pull up the latest tour. Link spam incoming. no offense if any of this is "below" you. just droppin shit i think is/should be helpful not knowing where you stand information wise.
TLDR watch others and learn from what they do. hope i helped a little. if not, oof get rekt me.