Welcome to GT.
You have made a great decision.I have only been here since January and have learnt loads both from the tutorials and the GT community.
You will hear this often, take everything slowly it is not a race. Pick up the guitar daily even if you can only grab 5 minutes. Practice, practice, practice!
Lastly don't give up! If you feel down come here and voice your concerns, there is a wealth of experience on the forum and they have gone through everything you are about to.
Paul