Need Help in C-Sharp Audio Programming

I am working on my college project. (a project to create a sound mixer) I want to mix up 5 different sound in one single sound. also add some audio effect and control volume before mixing them. please help me. I have read about naudio and base audio library but did not find help helping material, tutorial or documentation about these lib. kindly suggest me tutorials if possible on these libraries or suggest some better than these. I have visited pluralsight to view naudio tuts but they I am a student and have no money to subscribe on that site to view tuts. I just need tutorials or full documentation then I will make my project. Help me.