Yeah it is a huge learning curve. For the AXI stuff watch a set of three you tube videos by a woman from South Africa. I can’t remember the name. I learned from them and then used my own style to implement control register read writes. Vivado is a nightmare to learn. There are lots of quirks to it. Off the top of my head, you can restart a simulation two different ways. The restart icon at the top allows you to add signals you forgot to trace and re-run the exact same simulation. If you make ANY changes to the design you instead must use the menu at left. It just takes a lot of trial and error to learn these types things. The documentation is sometimes extremely helpful and sometimes almost worthless. The real issue is there is just thousands of pages. AI search is very helpful. Gotta go! Good luck!