How can I join two boards together effectively?

To join two boards together effectively, you can use wood glue and clamps to create a strong bond. First, apply a thin layer of wood glue to one of the boards. Then, press the two boards together firmly and use clamps to hold them in place while the glue dries. Make sure the boards are properly aligned before clamping. Allow the glue to dry completely before removing the clamps. This method will create a secure and durable joint between the two boards.