Do you have trouble with reading in general or only with chess books? If you're smart enough to use a PC and post your question here I'd guess you are smart enough to memorize the squares even if you're having trouble doing so right now
Chess notation/ books

Are you trying to visualize the moves in your head or are you playing through over the board and you can't remember the square name from the book to the board?
If you're trying to visualize the moves, that can be very difficult for more than a few ply and most people struggle with it to some degree or another. Even GMs use analysis boards when reading books at times.
If the problem is you simply can't remember the square from the time you read it until you get to the board, then there may be other things at play here. I wouldn't want to speculate what those things may be wtihout more information.
I have been reading chess books and find it really hard to follow all the notations!! I have to look at the board and back to book every single move because I have 'spot' the correct square. I'm finding all these really difficult. Does anyone feel the same way? or maybe I'm just not smart enough to memorize the squares...