If you're a keyboard fan, you may want to view Google's built-in list of seventy billion Gmail shortcuts. But if you're a keyboard fan with a lot of work to do, maybe this short list will be more helpful.
I have a sort of love-hate relationship with Gmail. Mostly hate, actually. But I've been trying to meet it halfway, and mastering a few keyboard shortcuts has helped. The table below shows my list of everyday favorites. If you want to see Google's full selection of shortcuts, you can type a question mark. For me, that's overkill, and this little cheat sheet is all I need. Maybe it's all you need, too. You can download it as a PDF if you'd like to keep it handy.
Note: To enable Gmail shortcuts, click Settings and choose the Keyboard Shortcuts On option.