[FAQ] What is the best way to prepare for the licensing exam?

This thread is part of the FAQ Hosting thread. Please help us make it better by answering the question in the post's title.

Please feel free to also comment on:

• Study Materials, Books, Classes

• Ways of studying

• Guides you used to study

• Any other things that you wish you knew when you were studying

When answering the questions, please note if you are talking about a BSW, MSW or clinical level exam. Thank you!