It doesn't help to learn anything about the piano to play the guitar. What seems instinctive to a keyboard player and common sense is a source of confusion to a non keyboard player. I have taught guitar for 30+ years: the only time I use a piano keyboard is when the student asks a piano related question.

Someone above said to leave the guitar out of its case so you can play at every opportunity. Hear Hear! Cases are for transportation, not storage IMO.

Learn barre chords, learn closed scale patterns, learn to play with other people. Do some warm-up exercises to get your fingers supple. Have two or three lessons with a good teacher (you don't have to commit to a lifetime's expense) to make sure that your basic techniques are OK.

Stu