The American Institute for Conservation website details what conservation is, what conservators do, conservation specialties, as well as how to become a conservator and includes a guide for how to care for various kinds of objects and artifacts.
The Art Jobs job board is regularly monitored and updated by the organization. The Museum & Gallery Jobs page routinely lists jobs in art museums across the United States.
This article from B.R. Howard Conservation explains what artifacts are, what it takes to conserve an artifact, who should conserve artifacts, and provides examples of artifact conservation and restoration.