Speaking as somone who has 15 years of bad habits under his belt: definitely go with the lessons.
Also, get decent gear. It doesn't have to be great but it should have decent action and sound. And learn how to set one up, either acoustic or electric. Playing with bad intonation and action can really hinder you.
Have fun! If you're like me you'll have to pick up an axe almost every day for the rest of your life!
