Some people here swear by wood glue but only if clamped and let dry all night.

I prefer the convenience of epoxy.

As you build more planes you'll be mixing up tons of epoxy in each step of the process. Wood glue doesn't need this, but you have to wait much longer for it to dry.

Epoxy also can be used as fuel proofing when mixed with denatured alchohol ( acetone is sometimes recommended but it's VERY hard on plastic and plastic covering ).

I like Tower/Hobbico's Epoxy packs. The GP stuff is awful and dries out very quickly even when adecuately stored.