Checkout the following review of free screen capture software that is useful in making youtube movies:
http://www.ilovefreesoftware.com/26/articles/5-best-free-screen-capture-software.html
Author recommended
https://www.monosnap.com/
Also checkout the free (trial or limited) video editing software for youtube:
https://www.iskysoft.com/video-editing/free-youtube-video-maker.html
1. Windows Movie Maker from Microsoft
2. Filmora Video Editor
3. Lightworks and other