Keeping your Linux system updated is vital to the health and security of your system. You can obtain vendor-provided updates for your system, and even third-party-provided updates for end-of-life products. Fedora Core 1 includes yum and up2date as tools for keeping your system updated.
Upgrading to Fedora Core need not be a scary prospect. There are multiple ways to accomplish the task, and workarounds available for most problems. Backing up your data prior to upgrading your system is absolutely critical. Loosing your data once will solidify this concept, but you'll be happier if you accept it on faith, rather than through sad experience.