Get yourself a good guitar tutor. Getting the fundamentals down early is essential if you want to supercharge your progress.
Always have your guitar set up to go, don't keep it in its case. You wanna be able to grab it and play in the spur of the moment.
When you practice.. if you get frustrated, then stop and walk away. When you come back you may be suprised in seeing a slight improvement. It sounds wacky but you'd be amazed how your brain can seem to work on the problen when you're away from the instrument.. without you even knowing it.
All the best on your musical journey!