Congratulations. There is nothing like the thrill that comes from doing something the first time. Especially when it comes to sailing.
The more you do the greater your confidence will be. Great conditions for learning. You can get moving with light to moderate winds like that and not feel overwhelmed. The more time you spend early on in those types of conditions, the more confidence you will gain in yourself.
Try to learn to just feel what the boat is doing. I don't rely on GPS or any gauges to tell me what the boat is doing. Learn to trust your feel of the situation. Try taking an anchor with you sometime and attach it to some type of float. Put it out in the water and practice pulling up to it, with the bow coming to a complete stop just before touching it. Do this under sail and power. Doing this with different boats as you are sailing will teach you the "feel" of boats and how they respond to your touch and control.
I'm jealous that you get to sail this time of the year. Have FUN !!!