New here, what is Blue Book and 10RS

Test Preparation SAT Preparation
1

<p>Hello, I am new to here, so not really used to the terms.
Can someone please tell me what is BB and 10RS everyones talking about?</p>

2

<p>BB = The Official SAT Study Guide By Collegeboard
10RS = 10 Real SATS By Collegeboard</p>