Does "get" from "get started" work as an emphasis? Does "get started" sound stronger than just "started"?
There is a slight difference in meaning between "start" and "get started". "Start" would indicate the beginning of an action that will continue, such as "start the thesis" in this video. In contrast, "get started" refers only to the action of beginning an activity. You could continue writing your thesis for example but the expression "get started" would refer to just the act of beginning the activity. So by using get started we know that it refers to only the beginning of the activity. Ex: I was tired when I got started, but I was fine after a while. Ex: He yelled at them to get started.