You could learn to speed read if your speed isn't as high as you'd like. Initially this involves tricks like saying numbers or letters over and over while reading so that you don't "speak" the words (even internally) which slows you down. There's also a trick where you can use two fingers (at a third and two thirds into the column of text you'd reading) and you jump your eyes between them while moving down.
In terms of books, consider reading reviews or summaries that people make online. Quite a lot of books have reasonable only summaries. These can help you decide whether something is worth reading. I'd say you need to be more picky if your reading list is so large - don't feel too upset you didn't get to read something, and focus on the awesome stuff you'll learn from the books that are worth reading :)
A trick that works for me with non-fiction books is to read the first and last page of each chapter. This will give you enough info (if the book is written well) to decide whether to read that chapter or not. It might seem like a waste if you bought the book to be able to go through it in 15 minutes, but if you weren't going to read it in time anyway... :)