You may speak with a Turbo Tax representative by phone at (800) 446-8848. Please be aware that if you are using the Free Edition of Turbo Tax that you will need to pay for phone support.
Additionally, if you feel as though you require more specialized assistance then you may want to consider upgrading to Turbo Tax Live. This version provides you with live on demand assistance from a CPA or EA and a review with the professional before finalizing the return. Check out the link below to see the benefits of Turbo Tax Live.