I want to start Teaching Quran...

Re: I want to start Teaching Quran...

That's a very noble intention, may Allah reward you for it. As far as teaching kids, I would start by teaching them the correct makharij of all the letters of the Arabic alphabet, and make sure that they understand and are able to do that much properly first. If I were sending my kids to someone to learn Quran, that would be one of the first things that I would look at, that the person teaching them at least has acceptable tajweed and can convey it to them.

As for advertizing the course, I would suggest doing that by word of mouth. First teach your friends' kids and let them spread the word. You can either provide the books and have their parents pay you for them. When it comes to the Quran, I would let the kids bring their own copy from where they would read. If you don't want to charge, there's no reason why you should.