Going /out/ for the first time since my military service. I'll have my gf and her bro with me who are both hardened country folk but useless when it comes to navigation so I want to prepare a map. I want to put markers on the map on where things like geocaches, little huts, creeks and our camps are. What tools do you guys use, preferably I would like to work on open street map data

> inb4 "Just use pen and paper bro"
I suck at drawing