Welcome to MR, keeper31, and Cassidym was right to direct you here.
Lots of very helpful people, stuff to learn, and free ebooks here on MR.
I have the Sony 505 and don't know a lot about the Kindle but, there is a very active membership for the Kindle on this forum very willing to help newbies.
Have fun with your new Kindle and exploring the threads for information. Jump in with questions when you need to and someone will answer shortly.