This is a tutorial series for modding on Forge for Minecraft 1.17.1. Check this wiki for more information about this tutorial series and many useful links:
https://wiki.mcjty.eu/modding/index.php?title=YouTube-Tutorials-17
This tutorial starts by updating Forge and fixing the tool for a breaking change. We also start using Parchment to get better mappings for parameter names. Finally we conclude by explaining how to add configuration to your mod.
Link to Parchment: https://github.com/ParchmentMC/Librarian/blob/dev/docs/FORGEGRADLE.md