Sure, there's a lot of free guitar video lessons available online, many of them are of suspect quality or incomplete. Here is an excellent compilation of 12 videos that are complete first rate lessons, by professional guitar teachers.
These free lessons include:
Songs -- How to play songs like AC/DC's "Back in Black"; Red Hot Chilli Peppers' "Under the Bridge"; Ted Nugent's "Cat Scratch Fever"; and "Cowboys from Hell" by Pantera.
Beginner Skills -- such as how to play Barre chords, Hammer-ons, and How to Tune Your Guitar.
Intermediate Skills -- lessons such as Finger Tapping, Tremalo Picking, Chromatic Phrasing, and Bluegrass licks.
Just select the lesson you want from the menu on the right of the JamPlay viewer, and the video will play in the main screen of the viewer.