This looks like it could be fun
https://sivads-sanctum.itch.io/ghosts-of-the-sierra-verde
This module along with it's hex map is a great way to break into hex crawls. ***See it's 5 Star Rating
https://www.drivethrurpg.com/product/358825
I like this a lot more than the D30 Hex Guides.
https://www.drivethrurpg.com/product/430675/Sandbox-Generator
D30 Sandbox Companion https://www.lulu.com/shop/richard-leblanc/d30-sandbox-companion/paperback/product-162rz4y9.html?q=d30&page=1&pageSize=4
D30 DM Companion https://www.lulu.com/shop/richard-leblanc/d30-dm-companion/paperback/product-18kknq5k.html?q=d30&page=1&pageSize=4
The long awaited update to Ultra Violet Grasslands is here. 2nd Edition is real A great hex alternative to exploration and caravaning
https://initiativeone.blogspot.com/2013/05/od-setting-posts-in-pdf.html read the setting pdf
inside you will learn how to make D&D an Arthurnian Game of High Fantasy.
This will help you run your first Hex Campaign
Add some body of water and a few islands and you have a good starting game world. Lavender Hack has great boat and exploration rules.
This is just about perfect and it is free
Been out for awhile and holds up time and again.