Just a quick trick I learned yesterday: I often glob files into vim from my terminal to view them quickly - for example, given the following files exist:

> ls 

When I run: vim *.txt

Then I expect file1.txt, the first file, to be opened

When I run the command :tab all within vim

I then see a tab for each file I have opened:

Tabs in vim

This is a very nice shortcut that I expect to use often!