paperlined.org
trades > fabrication > wood > hand_tools > joinery
document updated a month ago, on Dec 25, 2022

At the bottom of this page, Paul Sellers recommends the first three joinery methods beginners learn are:

  1. dovetail
  2. dado (what they call a "housing dado" in the UK, I believe is called just a "dado" in the US)
  3. mortise and tenon