Desperately in need of raising my score but have no idea what to do

So I’m going to be a senior next year, taking my first SAT in June. I scored poorly in it, resulting with a score of 1680. The main resources I’ve used were the blue book and the “black book” on amazon. I don’t know what I did wrong in my studying, but I need help in seeking other resources. I’m willing to devote all my time into studying, but I don’t know about enrolling in classes as the prices are too high. My plan so far is to reread the black book and seek out videos, but I don’t know what else to do as websites require me to pay. I’m also willing to buy any good books that can boost my score.

Well what I did was(who I am),was use those people who called me mental, stupid, retarted, idiot, and many other insults (including cuss words) to my advantage, (who I am) and scored a 2400

The average score is 1500 or so.

Like all the children in Lake Woebegone, you’re clearly above average. Isn’t that good?