My question is pretty straight to the point. I'm reading Real-Time Rendering right now, and while at the start I've done great understanding all the topics, I'm having a hard time once I entered rotations and stuff. I.e. the 4.2.2 chapter, where the function to extract parameters from an Euler Transform is presented, I've felt like the author just pulled a rabbit from a hat.
I know that most mathematicians could just derive those equations by themselves, but I absolutely can't do it right now.

So the question is: should I keep reading and I will eventually understand those things or should I stop and "start easier"?

I'm a little bit worried that I would not be able to follow along and waste my time, but then this could be only because I hate to not grasp the full concept right away and have a 'semi-knowledge' on something. Maybe I don't need to understand everything the first time?

I should mention that I'm a programmer and I know some decent linear algebra. I'm also planning to go hard on math on the next semesters.

Thanks to both!

While I'm generally able to understand the definition of the functions (like dot or cross product), I've a hard time with the proofs and how I could derive them myself should I need.

I know is pretty easy to look the algorithm, but as you guys mentioned, I like to have a good grasp to use these concepts in my favor. I would definitely keep learning deep math topics, and meanwhile try to not worry too much about the proofs.