How can I make tongue and groove joints using a table saw?

To make tongue and groove joints using a table saw, you will need to set up the saw with a dado blade to cut the groove and a regular blade to cut the tongue. Adjust the height and width of the blades to match the thickness of your wood. Use a featherboard to keep the wood steady and a miter gauge to guide the cuts. Cut the groove first, then adjust the blades to cut the tongue on the mating piece. Test the fit and make any necessary adjustments before finalizing the joint.