Contrary to popular belief, teachers are usually human beings. Like all human beings, your teachers rely on Google for everything, including teaching the course you’re in. Luckily, you can use this to your advantage. Google search for your college textbook’s publisher and include the phrase “Companion Website”. You’ll find practice tests, review sheets, chapter summaries, and lists of important topics.
I’ve done this for many of my textbooks and I find a companion website 80% of the time. Even better, many professors will take exam questions directly from the companion website since they think the student doesn’t know about it. I figured this out last year, and my GPA went from a 2.6 to a 3.4. So take my advice, find the companion website, and this could also be your ticket out of mediocrity!