There was a time when folks knew how to survive on the land, grow their own food, make their own clothes and build their own homes. Granted, most of us aren’t looking to go back to our frontier roots, but a few pioneer wannabes are seeking to learn those old-time skills and live a more frugal, earth-centered life. Several groups are only too happy to oblige. Practical Primitive, for example, offers classes in acorn processing, advanced bow-making, bone working, traditional shoemaking and stone tool making. Those looking for something a little less intense — and maybe more practical — can learn canning, cheesemaking and beekeeping at places like the Institute of Urban Homesteading.