SAT prep?

Ok, so next school year, I’m going to be a Junior, and as a Junior, that’s when I’m planning on taking my SAT test. The problem is, I almost have no idea how to prepare for the SATs. I’m using a few apps on my phone right now to help me study the vocab and to give me an idea of what the test will be like. I’m also planning on taking the practice tests online or around my area. Anyone else who has taken the SATs before and done well want to share some advice and tips with me? Thanks!

Back in the day I took a Princeton Review prep course and found it fairly useful.

Courses help if you are not self disciplined enough to commit to studying regularly.