Eldest used the Dr.Chung book and liked it, but a lot of folks aren't fond of it. Middle kid is using PWN the SAT. It is (a lot) less serious than Dr. Chung. However, if you don't like "near curse word" terms, perhaps PWN is not for him. He could go through the articles on the PWN website - most of the same info as the book, but free. PWN gives a lot of good techniques and describes the type of questions that appear on the SAT.
You really don't need Geometry to solve the SAT problems - middle kid understood most of the Geometry problems on the SAT in middle school. Just need to know how to apply basic facts(and perhaps do a bit of simple algebra). It is more about critical thinking and quickly seeing how to set up the problem rather than higher level math.
