Recommended tools

Lighting – keep it bright and balanced.
Audio – use a quality microphone and make sure your audio is clear, crisp, and audible. Remember that 2/3rds of good video is good audio. In fact, if you are going to invest in equipment, buy a quality microphone before a quality camera.
Video – use high resolution 720p or HD (most modern smartphones and digital cameras can record in 720p). 720p format has a resolution of 1280×720 or an aspect ratio of 16:9 (think widescreen tv). Here are the best export settings to use.
Framing – have a clean background and frame your objects in easy view. For portrait style video, have the objects well lit with a contrasting background (bright or dark); upper torso shot is recommended (for fitness courses, the closer the better).
Video length – your videos must under 20 minutes in length, but most video lectures fall within the 5-10 minute mark (the exact will vary based on your content).
Type – keep files to a 1.0 GiB size limit, use .mp4, .mov, or. flv format, and use widescreen 16:9 ratio (even though 4:3 is accepted).
Connection – imagine you are speaking to someone as you record your video. Look directly into the camera to connect with your audience.

Video

If you intend to create your course with sound only you may download free software such :

Jing (Free) MAC or PC
CamStudio (free) PC only – Open source, includes Webcam integration
Screenr (Free or Premium) MAC or PC
Camtasia Studio ($299) PC or MAC- Easy zoom and pan, most popular tool with instructors
Screenflow ($99) MAC only- Popular with our seasoned instructors on MACs
Camtasia for Mac ($99) MAC only – very easy to use, most popular tool with instructors (for additional discounts click here)
Debut Video Capture (Free or $29) MAC or PC
Front Cam ($30) PC
iShowU ($20-69) MAC only
Microsoft Expression (Free) PC only
Quicktime (Free) MAC