Understand the many types and applications of rabbet joints.
Making hand cut dovetail joints isn't as challenging as you may fear, thanks to an ingenious aluminum sawing jig.
Use a paper joint for joints you can easily take apart.
The router is the one tool that will handle all the dadoing and grooving you'll do in woodworking. The dado is prime-choice joinery. It follows that hoary adage of woodworking, "Use the simplest joint that will work."
Routing a rabbet is usually not difficult. Use a piloted rabbet bit in your router and guide it to cut perfect rabbets.
A long "platform" fence on your miter gauge makes these joints accurately with a dado blade.
How to repair table legs and other long parts with a simple joint.
Create a standard hidden (blind) mortise and tenon joint with just a few tools.