That's why you take notes in the lectures. You note what the lecturer says is important and what you feel are the key points. There are also textbooks, hundreds of online resources, tutors, your peers, your lecturer, and the notes you're given. You should not need a study guide. An outline of what to look over is exactly the same thing, just by a different name.
I'm currently in the middle of revising for two of my exams, I've got one tomorrow and the second one on Wednesday, and we're not given study materials. We're expected to look over the lecture slides and lecture notes, the examples given, the equations given, and any other notes/problems/solutions we were given over the course of the entire year. Nobody gets a study guide because that's not how it is in the real world. When you get a job nobody will hand you a sheet of paper with all the things you need to know; you'll have to pick out that information based on interactions int eh workplace, the equipment, the written material given to you, and the training you receive.
If you can't get by without all the information neatly laid out for you, you're going to have a very hard time in the real world. It's your job to make the study guide.