Getting back into music

I've just started taking guitar lessons here in town, and I'm pretty excited to be getting back into it again.
I've always adored music, particularly guitar, but somehow I've never really hooked up with other musical people to play with.
Well, there was one boyfriend whose dad was teaching me how to play some bluegrass tunes, which was a lot of fun. I even got to try the mandolin, which is pretty cool. That relationship didn't last very long, however, and I was sad that my guitar sessions with his dad had to come to end. I tried to think of a way to get him to let me hang out with his parents, even though we weren't dating anymore, but I thought it might be awkward. Is it weird that I missed my ex-boyfriend's parents more than I missed him? Oh well.
I made the mistake of giving that same boyfriend my electric guitar to fix up, because he said he would paint it and make it all perdy for me. Well, he took it all apart and procrastinated with the reconstruction. I decided to end the relationship and, long story short, my guitar is still in about ten little Ziploc bags, a couple of which were lost when I moved. I didn't think that through very well - but I prefer the acoustic guitar anyway.
I'm one of those people who like to dabble in 100 different things but never really focus on anything for too long, but guitar is the one thing I always come back to and never get tired of. It just allows me to block everything else out, turn off the non-musical part of my brain and focus on nothing but hitting the right notes and getting the right sound.
During my first lesson, I realized just how little I actually know about playing guitar. I've taught myself some things, but if my life depended on it I couldn't name ten chords or read a single note of sheet music. Heck, I couldn't even name all the basic parts of a guitar. I've been playing just for fun for quite a while, but I don't really have the self-discipline it takes to learn the technical part of it, which is why I'm taking lessons.
My ultimate goal is to be able to enter some kind of music festival, not this summer but the summer after that. Possibly the Montmartre Folk Festival, if they hold it again next year. I was even thinking of joining this year, until I ran into two small obstacles:
Number one: I've 'written' about twenty beginnings of songs, but not a single one of them has an ending yet. My Mac computer came with a music program that lets you record your voice, then a musical track, then you can insert a beat or create your own or whatever you want. It's awesome! For months, I didn't even know the program came with my computer, because Macs come with so many bells and whistles.
Number two: I suck. Singing is no problem, but I am severely lacking in guitar skills, so when I heard that musicians were coming from all over the world to perform in the festival, I said no way. Next year, though, I'm in for sure.