online video conference in the class room

I want to start online video conference to teach the classes for giving better education in poor schools and quality education in remote area schools with affordable cost but generally students will like reality picture i mean when we will teach on black/white board (not e-board or e-writing pad) with chalk piece that will be very effectively, so the problem is not visual full complete picture of black board including my picture through web camera so for which what i have do so please let me know? how to proceed? either which video camera will suport for online education or some other ways if you know pl suggestion me beacuse at present i badly need your suggestion and also better video and audio software for online video conference available with low cost