Tips to get motivated to read more?

I am 17 years old and I have never read very much, but I love the idea of reading, and of books in general. I tend to think I have fairy decent reading comprehension, but I feel like to retain the info in the book I need to read slower, so I tend to read rather slow. I've probably read only 6 or 7 books, the biggest being about 650 pages. I like the books that I read and I'll start to get sucked into for hours at a time, but I always tend to stop for weeks at a times, or will just stop reading all together. So I was looking for some tips to help get me more motivated to read or to read more or whatever. Also, I tend to enjoy non-fiction. I like learning things. Any help is greatly appreciated. Thank you.