Please be real careful.
Even if you do well with it now, this stuff has a way of coming back around and reminding you what happened in your teens when you hit 40+ and it is lots less fun when it does.
I'd be babying it as much as possible, not walking on it. They did give you crutches, right?
The 'net is a wonderful tool, too. There's lots of stuff out there on ACL.
Ohio State: Patient Education; ACL Tears "Treatment Options
Non-Surgical treatment of a torn ACL may include rigorous strengthening exercises; a special knee brace; and avoiding activities which cause knee pain, swelling or buckling/giving away. Activities most likely to cause pain, swelling or giving way are sudden start, stop, or pivoting type of activities. If the non-operative treatment method is not effective, these patients may choose to have knee reconstruction at a later date.
Surgical treatment of a torn ACL would require ACL reconstruction to restore knee stability. The goal of this procedure is to increase stability to the knee, thus allowing a more active life style, to minimize the risk of meniscus tear, and to reduce the risk of arthritis later in life. To learn more about this procedure, please read ACL Reconstruction Protocol.
"
Good luck!