Here’s a good tutorial that shows how to correct and adjust skin tones. The tutorial is a bit technical in terms of talking about cameras and stuff, but it’s a pretty helpful example of using the HSL Secondary color correction effect.
Here’s a page from Adobe that features all kinds of videos from the basics to color correction to animating elements
Here’s my handout for basic editing techniques in Adobe Premiere.
Here’s a handout for adding and manipulating images in the Premiere timeline.
It includes adding dissolves, changing scale, etc.