I added lights and outlets to my basement and all of the outlets work fine. Before I started the switch on the wall controlled one light and all of the others had pull strings. I've tried everything but the switch will not turn off the remaining three lights. What did I do wrong... how do I fix it? Help!

Did the wall switch control the others before?

It sound like it didn't and they are wired on their own circuits. YOU need to clarify a bit more.

You did not connect the proper switch wire