Look up the inverted method. You can find plenty of videos on youtube. I typically invert it and let it steep for about 5 minutes before making it. Shorter if I'm in a hurry, but when I can I let it steep. That can make it so strong that I have to add some water, making something of an americano.

If you push the plunger down slowly it makes less of a mess. Going too fast builds up the pressure and it just goes everywhere.