Before you start lessons …
I really strongly recommend you read everything in “New to learning and practicing guitar” (on the main quick start page), as this will start creating a mental framework to help you associate related ideas as you come across them.
If you are a complete beginner, you may also find these posts useful.
Roll your sleeves up!
Well done for getting this far. Remember to avoid distractions when practicing, be that theory, technique, ear training.
Wishing you all the success in your musical journey!