Our good friend Tom Khazoyan at Mission Media Coach has created a wonderful three-part video series. You can learn the ins and outs of mobile video recording, using wireless microphones to capture audio.
The first video is a general introduction explaining reasons to consider using wireless microphones. In Tom’s second video, he comparatively reviews wireless mic units. The final video gives you basic tips for using wireless mics in various mobile production situations.
Introduction
https://www.youtube.com/watch?v=TtzEPx9AenI
Comparative Review of Wireless Microphones
https://www.youtube.com/watch?v=Q5VRr8Evmzk
Hints & Helps for Recording with Wireless Mics & Mobile Phones