Is this one of the first books you are reading? I made the same mistake, I picked it up as my first ever book. However, it is a VERY tough read, especially since a lot of things have been given new names, new handling, etc. It is definitely a great book, but not the best one for complete beginners. I would pick up something like the Royal Road, which is a much easier read.
That being said, if you are going to read the expert at the card table, the easiest thing to do is to go into each section as if you have no idea what he will be talking about. If you start with a blank canvas, it will be much easier to pick stuff up. You will need to read over everything you don't understand 2 or 3 times, maybe even more. And at the end of every explanation, try it out, see if you can get the basics of what he was trying to say.