Newbie @ cisco router config….

I’m a newbie @ configuring routers. I wanted to know what I need to configure to get my router up and running? I have a Cisco 2611XM router. And also any links to Cisco IOS command line reference sheets would be cool. Also any suggestions for what I definately need to learn regarding Cisco device configuration and where to go to find it. Thanks in advance for any feedback it would be most appreciated.