JLPT course?

I don't know of any course, but why don't you subscribe to the Nihongo Journal? It comes with regular excerpts from the JLPT. I subscribed to it for 2 years before I took the JLPT in Japan. I ped level 1 on the first attempt. Just by reading the NJ monthly, I was up-to-date with what would be on the test and had no surprises at all on test day.