Depends on what you're trying to accomplish. Installing a Linux distribution and using it for everyday tasks (including full-disk-encryption) should be fairly easy. It's basically just pressing "Continue" a bunch of times for me. And after a while I get a desktop with a browser, an email client etc and I'm set.

If you want advice: Maybe go for one of the more popular distribuitions as of today. (K)Ubuntu is okay-ish but I don't think it's all that great. Or maybe ask someone to help you find the issue. Computers are known to be fairly complicated in general and there's always some annoying issues.