I built this bench in one afternoon and did the finishing work on the other. Tools used were a handsaw, jigsaw, Kreg Jig Mini and electric sander.
I modified the plan to use 10 inch lumber for the sides so that it would fit in the space where it would be used. Overall length was increased to 30 inches. Most of the wood was already on hand, but a 12"x4' piece was purchase for the top (instead of reclaimed pieces)
Bottom shelf was joined with the Kreg screws. Aprons were fastened with brass screws. The top was put on with finishing nails.