This is the most recent study guide as of 2017.
It covers all the aspects of the exam.
It starts from p. 209
These Quizzes will amplify the reading effect: you will know what to concentrate on.
Both quizzes and manuals are free. Use them!
Quizzes at crfsc.safetyquizz.com will speed up your preparation: you will know what to concentrate on while reading manuals plus you can check yourself down the road.