This pen and paper has brought me many hours of fun and creativity.I was introduced to Zentangle several yeas ago and have wanted to try it ever since. I finally carved out a bit of time to experiment. I used a Pigma Micron pen and the 4"x6" photo paper that comes with new inkjet cartridges. I started by watching a YouTube Video, that gave a nice introduction. Zentangle is really a fancy form of doodling. Here is my first one.
I have tried to do one a day. And each time that I do one, I search around for new fill-in ideas. This ends up increasing my "vocabulary". A Sharpie marker works well to fill in larger areas. Here are a couple more.
There are books and classes out there, but all you need to start is a pen and a piece of paper. Try it. It's fun!