One from me would be:
If you have a number of projects on the go at once, go to:
Tools > Options… > General
and deselect “Open recent projects on program launch”
I use Scrivener for work projects and personal creative writing so the last project I worked on isn’t necessarily the project I want to be open when I start up the program. In fact, if I’m in the office or with a client, there is a good chance it’s the last thing I’d want to appear on the screen!