I am preparing to take the Praxis 5622: Principles of Learning and Teaching K-6 test on March 15. I have been studying using a Cirrus Test Prep book that I purchased off of Amazon. I used the same brand (? or company?) of prep materials to study for the Praxis 5018 exam. I passed that one so I am confident that the material is good. I know that you can't discuss questions on the test but I have been told that the Praxis 5018 test is the hardest one that I will have to take. So, I am wondering if you thought the same? After this, I still have to take Praxis 5017 and 5203. I am also looking for any other free resources. I am well aware of Teacherstestprep.com but was looking for others!