chords are sounds produced when several strings are depressed at varying frets and when strummed. what hofner posted is how to read chords on songs that u find online, with the lyrics below and the chords just above them. u can find which strings to depress for what chord either online, or via a chord book. hope that was of help ^^
btw, for website with song lyrics + chords, u might wanna try mxtabs.net, or if u have the guitar pro program ( u can use the demo version, and if im not wrong, even after the 30 day trial period is up ) then u can get better tabs from mysongbook.com