This video covers the three different types of plate boundaries.
1. Divergent: Oceanic
2. Convergent: Oceanic, Continental and a combination of both
3. Transform
For how a divergent plate boundary forms over a continent, please see my video on faulting (https://www.youtube.com/watch?v=xZFL1tG_r6U) as the formation of rift valleys is covered there.
Additional Images:
Image by jacqueline macou from Pixabay
Maps taken from Google Maps 2020
Image by sebastian del val from Pixabay
Image by David Mark from Pixabay