Post History
This is a classic "cabbagehead character," who allows you to gradually unveil your worldbuilding as he leaves his isolation and goes out into the larger community. Nothing wrong with this at all....
Answer
#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/23521 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/23521 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
This is a classic "cabbagehead character," who allows you to gradually unveil your worldbuilding as he leaves his isolation and goes out into the larger community. Nothing wrong with this at all. First example I can think of is Garion from David and Leigh Eddings' pentology The Belgariad (and second pentology The Malloreon). He is exactly what you describe: a sheltered peasant boy who leaves his small village to venture out on a great quest. In fact, one of his adult companions, the smith Durnik, is _also_ a village man (a blacksmith, so not utterly ignorant) who joins the adventurers and learns about the larger world. Very usable trope. Go for it.