>>7295473To be fair, I think you've asked a really stupid question.
"I want to read 300 level course textbooks, HOW DO I UNDERSTAND WHAT'S HAPPENING?"
Well read the fundamental 100 and 200 level textbooks... Not sure what sort of answer you expected other than that.
And you're lucky enough to live in the 21st century. The internet has the retention of all of mankind's information and is entirely searchable to your specific queries within milliseconds.
