Well, I don't think the violin is easy to learn. I'm 27 years old and I started playing the violin 9 months ago. I do not think you can learn it very well just by getting a book or something.
The first you have to learn is to know how to stand up and how to hold the violin. You might think you are doing it good but you will never know if it is correct so it is hard to learn and if you want to learn it, get some classes.
If you want to just try out the violin or if you are not a full size yet, consider renting a violin. Most music stores allow you to rent an instrument instead of buying one straight away, and some let you pay monthly and can return it anytime. Ask a family member if they know somewhere you can get a violin and ask if they know somewhere you can learn to play.
Try to get lessons locally to you if possible. You are not going to learn to play in a day it will take a few months to a few years depending on if you are teaching yourself or have a good teacher! Before purchasing your violin, make sure you are dedicated to learning so you don't waste your time and money.
Remember, the average violin is five hundred dollars (for a good one). Set a goal to complete by the end of your practice session. Never put your violin in your case with your shoulder rest on.
Use your hands by plucking (Pizzicato) then use your bow. Do not leave your bow tight after playing as it can be damaged and bows can be very expensive.
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