All of my videos are created and edited using Camtasia with the help of my image capture and editor, Sangit.
I have been using these tools for over a decade and am always amazed at the new features every year. If you're new to video editing, I strongly encourage you to explore Camtasia (with the Snagit combo) to get started.
You can download each and take advantage of the full features free for 30 days.