RapidComposer v4 tutorials:
Tutorials using RapidComposer v3.6. The contents still apply for v4, even though the v4 UI is slightly different.
Click on this link for the playlist: https://www.youtube.com/playlist?list=PLKFG7xp0mDzwLL6G-kT0OEBuGp7iqUdMY
You can find older videos here.