I've seen posts asking about Tinkers Construct 1.16 Traits and Modifiers. Since the guidebook is not yet ready, here is one of the design docs for people to look at for now :
Tinkers' Construct Addon (1.19) - MCPE/Bedrock Edition Mod - 9Minecraft.Net
Modifiers | Tinkers' Construct 2 Wiki | Fandom
File:Tinkers Construct smeltery.png - Wikipedia
Minecraft Mod Review - Tinkers' Construct - Getting Started - Part 1 - YouTube
Minecraft Mod Review - Tinkers' Construct - Tools & Weapons - Part 3 - YouTube
Tinkers' Construct Mod (1.18.2, 1.16.5) - Modify All the Things - 9Minecraft.Net
Tinkers' Construct 3 FAQ · SlimeKnights/TinkersConstruct Wiki · GitHub