Playing with lettering is fun and easier than you think! It's like drawing and doodling with forms you are very familiar with. Jenny Doh's book Creative Lettering (link below) was my source of inspiration.
Use words and thoughts that are meaningful to you. I worked on Strathmore Bristol. Use a pencil to sketch out the words then go over them with pen. You can erase any mess ups, just draw lightly! I used Pitt Pen markers and Tombow's for color - any markers would do.
Here's the link for Jenny's book which is great for beginners. Like Zentangle, Lettering is something you can easily begin with a minimum of fuss. Brainstorm some words and phrases and keep that list handy while you lay out your page. It's really easy to make a spelling error (*ahem).