Hi Peg. All good advice. Get over 'losing face'...counseling or whatever it takes. Yep, it is a 'man' thing but 'face' and big male egos abound in the sailing community and can move from stupid to dangerous if things take a sudden swing for the worse...weather etc.
Get the motor, lights etc in top working shape and start using the boat as a power boat only at first. Practice all the simple stuff like line tossing to hang a dock cleat, knots, docking and undocking and do it all SLOWLY. Learn the power of neutral. A very slowly drifting boat can 'hit' the dock without any damage. Practice picking up moorings til you are so good at it that you look forward to it. You drive the boat and make ego-man pick up the mooring. Same with the docking. When you develop these simple skills to a 'T' you will be better than most boaters and have self confidence to move on up to whatever level you choose.
Good luck and happy motoring/sailing.
mike in Islamorada, FL Keys