There are many books out there that cover these topics, so I would highly recommend building a list of these books, checking the reviews of them on Amazon to see what the general consensus on their quality is and then simply buying the best possible resources to study hard from them.
I will advise you the following sources:
Study guide by McQuerry + Exam guide by Odom + NetSim simulator by Odom
-read McQuerry 1st then corresponding Odom
-use Odom's "exam topics" to focus attention in final-stage prep
- test youself (often!) using free exams included with books and chapter quizzes