Welcome to MR and congratulations on your new Sony, Kai Winters.
You sound like you already have the basics understood. Lots of free sci-fi out there.
We also have quite a few authors on this site who very generously offered their work to us. Be sure to check out the Deals, Freebies, and Resources thread along with the Writers' Corner. Watch for various avatars as that will clue you to some other authors.
Don't forget to check out the beautifully formatted ebooks on this site. The members who upload them for us take pride in producing nice looking ebooks.
Ask questions if you need help and have fun following the threads.
PS.... what color did you get?