I think all I did was play with it for the first 3 weeks and didn't read one book.
Games, movies, internet searches, etc. then I became tired of playing with it and just wanted to read. I put mantano on so I could read some of my epubs and now I can read either, which I like. I like the Carousel to spin the book covers and I can choose what to download.
Oh, I also loaded lots of pictures to share with my co-workers as we can't have phones out, but no restriction on the Fire.
I know I have enough books on there to keep me happy and not wanting to purchase for a while longer. I may even try not to buy for a few more months, then I can justify getting a new device when the end of year new ones come out.