By who and when Viola made? how we should play the Viola?

The Viola has made by Brahms in 1980 in Italy.

The way that we learn how to play the Viola:
1.Put a shoulder rest on the viola to make it more comfortable. Hold the viola upside down so its back is facing you. Hold one side of the shoulder rest against the edge of your viola so it looks like a smile. Lift the other side of the rest and slide it on the opposite side of the viola. Keep pushing it down until it has a tight fit. You can buy a shoulder rest at a music supply store or online.
You don’t need to use a shoulder rest if you don’t want to.

2. Balance the viola on the left side of your collarbone. Stand with your feet shoulder-width apart or sit on a firm chair, making sure to keep your back straight. Grab the viola at the base of its neck and bring it up to your left shoulder. Point the pin on the bottom of the viola toward the center of your neck. Keep the viola at a 45-degree angle so it balances easily on your collarbone. Shift the viola slightly until the shoulder rest feels comfortable.
If your viola is too far forward or back on your shoulder, it will be difficult to hold and support.

3. Rest your chin and jaw on the chin rest. The chin rest is at the bottom of your instrument and provides extra support while you play. Once the viola is balanced on your collarbone, tilt your head down so it’s on the chin rest. Use the bottom of your jaw and chin to support the viola.
Don’t grip the instrument between your head and shoulder or else you could develop neck problems over time.

4. Hook your left thumb around the back of the viola’s neck. Slide your left hand from the base of the neck toward the scroll, or the top of the neck near the tuning pegs. Keep your thumb on the left side of the neck closest to the C string. Squeeze your thumb against the side of the viola to hold it in place. Don’t rest the neck of the viola against your wrist. Make sure your elbow is under the center of the viola.

5. Curl the rest of your fingers over the neck. The rest of the fingers on your left hand are used to press down on the strings and play notes. Curl your fingers so your thumb and index finger make a backward C-shape. Rest your fingers on the edge of the fingerboard for now.