Welcome! Take your time, be patient, RTFM, and understand flight modes and RTH conditions. Program A button for manual flight - will come in handy when things go south and pause doesn't help.
Use search on the forum. Tons of smart people here with lots of stick time.
Welcome. This is a wonderful bunch of people here and most of your questions can probably be answered by searching older posts. Whatever you might run into, somebody here probably already has, and can tell you what to do to resolve the issue.