To add to project’s post: the router is possibly the most dangerous of power tools. Bits going in excess of 20k RPM don’t stop for anything. They’ll bite and chew their way through most materials. I’ve seen somebody put a router back down on the bench before it had stopped spinning and it threw itself straight back up in the air, cut through the power cable and took chunks out of the bench, all in the blink of an eye. The kid that did it went an awful ashen colour.
Get plenty of practice on scrap – ply and MDF (urge) are best; pine will gum up bits very quickly and require regularly cleaning off before it cooks into place. Even if the router has extraction, wear a proper mask. If it doesn’t have extraction, prepare yourself for a lot of cleaning/dusting afterwards. Hardwood dust is highly allergenic and also carcinogenic; MDF dust is super-fine and will really sit on your chest and get in your eyes.
Listen out for the router screaming – you’re taking off too much and/or the bit is blunt. Cheap bits are a waste of money.
They’re fantastic tools, really improve the finish of even simple pieces. They really benefit from jigs, so check those out on YouTube and make friends with somebody who has a table saw! Pinterest is also excellent resource for how-to guides.