Welcome, on the small item approach do several of the same thing in batches. You will gain experience faster, spending more time with each step. If you botch one, save it for a tester on the next step. This way you don't have to start all over (that is frustrating).
As for books, these are my recommendations.......
The Art of Handsewing, Al Stohlman.
Leather Tools, how to use them, how to sharpen them, again Al Stohlman.
These are two cheap books that pay off huge dividends.
If you are not comfortable with sharpening, you'll have to learn. I was at it for awhile before I realized I had to know how to sharpen things.
If you can find F.O. Beard's "Leather Secrets", it has some of every technique, pattern, and process. It really is a wealth of information, although dated.
Have fun.