Steal the idea. Run the game.
Things I kept explaining at the table until I wrote them down: running a first game, building tension, setting up maps and tokens, and playing with little kids. Useful whether or not you ever buy anything.

How to Run Your First D&D Game
A one-hour prep plan, the first fifteen minutes, and how to end the night on purpose.

Session Zero Checklist
What to talk about before you play, including simple safety tools.

Low-Prep One-Shots
The seven things a one-shot needs, and what to leave improvised.

Speed Up Combat
Where the time goes and how to get it back.

Level 3-5 One-Shots
Build a low-level one-shot that actually finishes in one night.

Visible Trackers
Five tracker designs and the rules for building your own.

In-Character Distrust
Characters doubting each other, without hurting the table.

NPCs With a Secret
A five-part method that makes NPCs playable.

High-Level One-Shots
Fewer, clearer enemies and objectives beyond damage.

Feywild One-Shot Ideas
Make the Fey feel dangerous, the kind of strange that has teeth.

D&D-Style RPGs for Ages 3-7
A simpler way to introduce young kids to roleplaying, choices, and math.

D&D for Preschoolers
What to cut, what to keep, and a one-minute character sheet.

Playing With a 3-5-Year-Old
A first session, step by step.

One Parent, One Child
How to be a companion without taking over.

How Long Should It Last?
Session lengths by age, and how to split a story.

Kids of Different Ages
One adventure for a mixed-age table.
Roblox Number Games for Kids
What to look for, and how to try it together first.

Print a Battle Map at Home
Scale, page counts for Letter and A4, tiling, and assembly.

Gridded vs. Gridless Maps
When each one works, and how to switch between VTT and table.

Import Tokens Into Roll20 and Foundry
Steps for both, plus sizing creatures to the grid.

Goblin Mine Encounters
Hazards, map ideas, and hooks for a mine that feels alive.