Hail, and well met, illustrious Cartographer's Guild!
I've been browsing this website for a day or three now and my mind has been BLOWN.
I'm a 25-year-old lad who DMs D&D. I work from 11pm to 7am at a hotel, so I generally get about 4-6 hours every night in which to work on my campaigns, but I have no available computers at work to speak of, so my medium of choice is a SPIRAL DRAWING NOTEBOOK and CRAYOLA COLORED PENCILS.
It's not the most refined technique, but my players never see most of my maps anyway.*
My favorite part of map-making is making sure everything makes sense in a somewhat-realistic way, even in a magical setting. Once you pass a well-concealed trap, you're not likely to find any stupid kobolds, there can be no island with nothing but carnivores on it, and intelligent races tend to live amongst their own kind(it makes finding restaurants and bathrooms much easier).
So salutations once again, and thanks for having me. I'll be on my best behavior.*

*lies