The biggest mistake students make in trying to get into a university is they don't start early enough. They wait until their English gets better. Don't wait. Start now and get organized with this helpful resource.
Many schools will let you use the same application instead of submitting multiple applications. Go to Common App to find out more, http://www.commonapp.org/
You might want to read blogs from the admissions department of universities you want to attend. You can Google them and also get fast updates on Twitter. Here is Georgia Tech's Admission's Blog, http://pwp.gatech.edu/admission-blog/