Opinions vary greatly among sound engineers on the best method and equipment for recording audio with a DSLR. You've likely seen many videos that use a lavalier microphone — the small piece that clips below the collar of the talent's shirt. Lavaliers come in both wired and wireless options. However, lavaliers can be a bit obtrusive both for the talent (who has to have a wire threaded down his or her shirt) and for the viewer (who has to see a microphone for the whole video).
During the shoot, your job goes beyond pressing record. First and foremost, you need to be a coach. Balance critical feedback with support and be quick to give encouragement after each take. This is why conducting a table read during the scripting process is so important: It's easier to give feedback when there's not a camera in the room. Remember, be a little silly during the shoot or your talent will be on edge and uncomfortable — and it will show in the footage.
Video Marketing is a good way to promote your business. However, it’s not that an easy task and sometimes you need a help from your co-workers like graphic designers if you don’t know how to create or draw your own icon or image to be used in the video. Though you can get from free stock photos and icons sites to compile it for your video, I think it’s better if you create your own.