One of the common instruments being used in music is the guitar. You can walk the streets and see buskers and musicians on the streets and their main instrument to making music is the guitar. It was invented and was used for many generations. The electric guitar was also invented and so they are used mainly accompanied by other musical instruments. The guitar is such an amazing musical instrument. That is why you may be interested also to learn it. Whatever is the age, it does not matter.
One thing you should do when learning to play guitar is that have the confidence to learn and to practice strumming your guitar. To have that confidence, find someone who could teach you the guitar playing. If they are already expert then it is very nice. You could learn many from them. One who has self-learned and is already ahead and has many things to share with you is also a good teacher as he had developed his own system and have discovered many things.
The next thing is to have your own guitar if you want and if you can. You can just borrow from someone who does not play it any longer. You can also ask what is the guitar that is suitable for you as there are also differences of those who are available in the market. Understand the guitar and be used to it so you can begin your lesson to play it and have succeeded in doing it.