Playing the guitar is one of my favorite hobbies.
Modern guitar type instruments were not made until the Renaissance. 
They are still pretty old. That's very interesting.
The classical guitar has 12 frets. The strings are made of nylon instead of metal. 
I wonder if it sounded any better than modern guitars?
Probably.  Classical guitar is very hard to master. 
I bet. I only play the modern guitar.
Fingerstyle guitar
Fingerstyle guitar is the technique of playing the guitar by plucking the strings directly with the fingertips, fingernails, or picks attached to fingers, as opposed to flatpicking (plucking individual notes with a single plectrum, commonly called a "pick"). The term "fingerstyle" is something of a misnomer, since it is present in several different genres and styles of music—but mostly, because it involves a completely different technique, not just a "style" of playing, especially for the guitarist's picking
Classical guitar strings
Classical guitar strings are strings manufactured for use on classical guitars. While steel-string acoustic guitar strings and electric guitar strings are made of metal, modern classical guitar strings are made of nylon and nylon wound with wire, which produces a different sound to the metal strings. Classical guitar strings were originally made with animal intestine and silk wound with animal intestine up until World War II, when war restrictions led Albert Augustine Ltd. to develop nylon strings. Nylon guitar strings were put into production in 1948. Strings