Just get someone to teach you how to form a barre chord and get them to show you "smoke on the water" or "smells like teen spirit" or whatever the crazy kids are into these days that is simple to play..
From there it's pretty simple to go to the online tablature sites and find out how to play songs from your favourite bands. Thats pretty much how i learnt and i can play ok. I never wanted to be Joe Satriani so i never really bothered with a teacher.. In fact I'd only really suggest a teacher after you've learnt the basics off your mates and can play a few tunes from your favourite bands so you don't waste money getting a teacher to show you how to play the E chord for $30 an hour.
If you're learning music you like from your favourite bands and that keeps you interested you will progress relatively quickly to the point where you can decide whether you need a teacher to take you to the next level.
Then again you might be the sort of person who needs a weekly time set aside to learn with a teacher to actually pick the damn guitar up and be forced to learn. I was like that with the cello as i found it quite a bit harder than guitar... stupid bow and no frets
