As far as guitar goes I am pretty new to the topic - got into it through Dowland's songs, actually. I just wanted to try to read the lute parts and, well, guitar was the nearest thing available.
I am self taught, on the other hand I have a pretty strong musical background - I've used to be a pretty decent oboist, I've learned to play the flute, i have a quite long history with choir singing and composition - and now I really enjoy this wholly new world of stringed instruments. The one thing that I have missed in the woodwinds was the harmony and that is what I enjoy the most here, I think.
True to my other instruments of preference, I love the renaissance and baroque repertoire - still discovering something new and interesting among the vihuela and baroque guitar pieces, even if I still love to play the English lute renaissance.
I don't really know what to add - if you wanted to ask something, feel free, of course.
With greetings from Warsaw,