Yeah it can all get overwhelming.  One thing at a time.  Right now i'm reading up on Seedsigner, gonna order one.  Oh, i have settled on Linux Mint, its pretty easy to use and there's lots of support if you have questions.  I'm just a basic user, so dont need anything fancy.  What i love most about linux is that i can have a "new" laptop buy buying a used Lenovo Thinkpad for $200-300, then wipe Windows off and install linux.  No more expensive laptops.