The official SAT Study Guide by collegeboard is also called the BB, bluebook right?
so is there a new one every year or it's all the same?
and i know there are letter answers at the end of every test, but where are the thorough explanations, or does it even exist? Because isnt that extremely important in studying for the test? So where can i or can i even get them?
Also regarding the 10 real SATs, is it helpful for the new SATs? or is it out of date?
finally, are there any other books that i am missing published by CB that is really important in preparing for the SATs?