The Child of Chaos

I'm trying to decide if I want to continue with this series. I want to find out what happens so the students/children but I'm not sure I like his writing style. I liked the story but sometimes it gets bogged down with this extraneous stuff, like detailed explanations of scientific or physic type principles. That is one part then it goes off into a tangent about Greek mythology. I think that the Greek mythology is setting up the the next books but the scientific/physic stuff just seems superfluous and it distracts from the overall series. Seeing as not that many other people have read it I wonder if this was one of those free books I picked up from Kindle. I'm stumped if I want to continue the series to find out what happens or define it as a waste of my time and leave it as is.