I Bought The Princeton Review Book To Study For The Chemistry Sat Subject Test. Is This A Good Study Tool?

Is this a good study tool or do i need to study other things also. And if anyone took it before please help!

Need Help! I Bought An Online Course And I Took The Practice Sat Test And I Got… Is This Good/bad/average?

Need help! i bought an online course and i took the practice sat test and i got… is this good/bad/average? Critical Reading : 490 Writing: 570 (MC: 57, Essay: Math: 450 whats my total score? and if this were my real sat score would it get me into decent colleges?