To quickly answer Sally’s question, we have TONS of classes on different topics in the Campus. The next step, however, might be the Basic Scrap Course, which you should hear about in a following email (one thing at the time). The very first module of that course will address some ways to improve photos.
Yes, you can add as many patterns in the Patterns folder, but for fonts, that is managed by Windows, not by PSP. If you want to “add” fonts to PSP, check out this post instead.