I got my Fire Tablet on Amazon Prime Day and I have subsequently been using the Kindle portion of it. Since I'm also a big Trekkie, I thought I'd pass along these three free Kindle downloads - they're pretty good actually. Free is also good?
Star Trek: Alien Spotlight - Borg Kindle & comiXology
Star Trek: Countdown #1 Kindle & comiXology
Star Trek: TNG: Mirror Broken #0 Kindle & comiXology
Engage! Make it so!