Every type of guitar requires its own unique style of guitar playing. As a beginner in playing guitar, you may think that as long as you have guitar, you can do whatever style you have in mind. That could actually work. However, you may be out of tune at times. For you to be able to play guitar well, you need to make sure your style corresponds the type of your guitar.
You need to identify first what type of guitar you have. In that way, you can then practice what style would suit you and your instrument. By practicing, you will become a master of such style.
The nylon string guitar is a classical guitar that has eighteen frets overall. It is designed for more sustain. The steel string guitar on the other hand is for country and folk music. It has twenty frets overall. Lastly, there is the amplified guitar. This type of guitar is good for jazz music. It has twenty-two frets with magnetic pick-ups.
You need to be careful though in playing these different guitar styles for this may be causes of lower back pain. Of course, you may sit or stand during playing but still you may have such body pains. You need to stretch out first before doing anything. This will condition your muscles.
Failure to condition your muscles may lead to stiff muscles. You would not want to end the day complaining about your aching back. You can always consult a professional medical help if the pain persists.
What is important is that you have enjoyed the whole process of learning how to play guitar. It does not matter much if you get body pains later on so long as you know if are learning. Besides, your music will take care of it.