This site houses a guide and relevant tutorials about Studio, a screencasting and video tool inside Canvas.
Read each page and go to the next page linked at the end of each page.
OR
Jump to a section (e.g., "Recording") using the page titles at the top.
Read "What is Canvas Studio" from the Canvas LMS Community.
According to the Studio page, Studio is, "video made smart, easy, engaging, and -- yes -- interactive."
Next: Recording