Hey guys, what's up? So, I've been lifting for about a year now and yesterday was the day to change the exercises, but I really didn't like the exercises, it seems that the trainer is just putting random exercises. I'm going 3 times a week now because the lack of time, and I have 2 different exercises days. One is chest, shoulder and triceps, with some leg and the other day is back, biceps and leg too.

Is there any way I can improve that? I will try to go on another gym nearby on the next change. Is there a book or something I can learn by myself?

Thanks!