Learning to type by touch is a very important skill to learn!
Here are some basic tips for learning to type by touch effectively.
Slower is faster. Speed comes from certainty. The more you type things correctly, no matter how slow it has to be, the more certain you will be, and the faster you will become. Increase speed only when you feel sure enough to do so.
Don't look at the keyboard! If you don't know where a key is, look at the keyboard to find it, then look away and type the key. Do not guess; always be sure.
Tap on each key crisply but lightly. If you use minimum force, your fingers will move faster. Hit the keys squarely in the center.
Type as quickly as you are able, but don't "try" too hard or force your speed or you'll make many mistakes.
Relax!
Use proper posture, sit upright.
Keyboard/monitor positioning: your wrist, elbows and keyboard should be on the same horizontal plane, and at a 90 degree angle to your upper arms.
The top of your screen should be near eye level.
Stretch your wrists and fingers before starting a typing test.