Two ways you can learn how to do it:
1. Easy and quick: go to NORA, Homedopot, go to shower department and ask their staff. They'll tell you how to do it nicely. These stores also often have a free lecture about home repair, installation, plumbing, etc.
When I bought that shower, an installation instruction paper was inside the box, followed its steps is OK.
For me, I just concerned glue all maybe leak points and lines. Actually, 7 years passed, my shower never give me a trouble.
2. Go to a library, find a book about home jobs including shower, plumbing, etc. It also help. Yes, you need to do some plumbing job, so learn how to do it is also necessary.