Building from a plan (drawings) in your case probably means finding all the proper material.
Balsa strips and sheets, plywood, landing gear, hinges, and all that is necessary.

Some kits are still available if you look for them.

Of course you still have to buy your glue, the covering materials and perhaps some basic tools.
A flat work surface of 48" x 24" is quite adequate.

The electronics are of you choice after you consult with you local group.
It is preferale to join a local club (group) if one is in the surrounding areas where you live.

The building is one of the most rewarding aspect of this hobby.

Zor