Hi, I am going to start a computer course which would contain both audio and video , but really confused which/what microphone I should use in my Mac.
 
I tried with in-built microphone and with ear phones but the voice output is not great
 
1) Could some one please suggest me which head phones I should go for, probably with max price tag £100, I prefer USB ones ? 
 
2) Also are there any audio editing techniques so that I could make my voice better ?
 
Thanks
Suresh