Great content! I think a huge enhancement as you move forward with these videos would be to use a higher quality microphone. You are putting in the time and effort and I think you won't regret upgrading to really give your videos that extra notch to push them above a recorded standard lecture. Check out a studio mic, such as the Blue Yeti Condensor Microphone. I've used it for some podcasting and other audio work and it works wonders. It's like 89 bucks used on ebay!
