I’m a new member and I have posted some threads but I don’t really know like what’s good to post?
As a newbie I mostly lurked without posting for awhile. If you have questions, search older threads for info before asking for the same info. If you can’t find an answer, find a related category, and post away!
But be prepared for some harsh responses by certain posters. Then ignore them. Good luck and welcome!
Not to be harsh. 
But you are 13 from your other posts, with no academic record in high school and no standardized test scores. There is a high school forum and a forum on summer programs, those might be good forums to hang out on. But as a HS freshman you really shouldn’t be worrying much about college. Second semester sophomore year is a good time to start giving it some thought.
Go read a CC favorite: How to be a High School Superstar by Cal Newport. Just what you might need to know now as an ambitous 13yo.
Yes, that is a great suggestion! You are at a perfect age to benefit from it.