Art Materials
The number one question I receive from other artists is about the materials I use, especially the paint pens, so I've outlined some options below.
That said, I always emphasize learning how to use the medium is more important than using the right one. If you're interested in that, I recommend my Patreon channel, which is where I'm building my first long-form drawing curriculum using various prompts. To get started, you can sign up here.
Paint Pens
Artistro has several good packages at the best prices I've seen. If you're new to using these, this is the way to go. Coupon Code: KevinZych
Sketchbooks:
Moleskine Watercolor Notebook
This notebook checks every box. I prefer thicker pages because I tend to pile layers of paint on top of each other, and this has always stood the test. I also like the size - good for carrying around - and the portrait orientation. The perfect street sketchbook.