Check out your local IIA chapter. If you're not a member, join. You'll meet a lot of great people and get a lot of good advice [and contacts]. Many chapters have review programs and some have the books available either at a reduced rate, or in their library.
Experience helps out a lot, especially of your shop is well run. Read the Gleim, and picture how your department does things. If there is a good match, thinking through some of the problems will be a lot easier rather than just memorizing words.
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Integrity. With it, nothing else matters. Without it, nothing else matters.