the in-game tutorials suck. they are misleading, and even the good ones you can’t see again in the menus later on. i think
chuggaaconroy’s video (https://www.youtube.com/watch?v=b8P7KhFSA2w) is probably a decent place to get situated. enel’s videos are also outstanding for mechanics but he does have some party member spoilers in them, and most are focused on postgame anyways.

First of all, just enjoy the fantastic ride. There are a million different systems and mechanics, which eventually might click. Another poster already linked a great combat video. After a few hours in that’s a great suggestion but until then make sure to give your party deserts. The thing that took me long to grasp was the fact that going back to prior zones is a must, even if it feels that the story drives you further.