Rules, Errata, and Homebrew

Errata

Published corrections/changes to the current version of the PDF.

One exception is the new Medical Kit (heals a Wound during a Field Rest). This campaign doesn't have any way to heal wounds except time & class abilities / magic.

Combat Rules
Spells
Equipment
Ancestries & Backgrounds
Monster Armor

Homebrew Rules & Clarifications

These are mostly clarifications where the source book says things are optional or up to the GM, but also a few homebrew additions to make room for player improv / creativity:
Nimble 5E Clarifications and Homebrew

Leveling Up

If any of your base stats increase, remember to adjust other elements of your character sheet as needed (skills, damage, Initiative, armor, mana, languages, etc.).