Answer:
change u to you and put a comma after "if you type properly.
Step-by-step explanation:
The full corrected paragraph would look like this:
Touch typing is a useful skill. It allows you to increase your typing speed and at the same time reduce the number of errors you make. Touch typing makes you faster and more efficient. You are more productive and can complete your school assignments more quickly. Touch typing also allows you to quickly type communication documents, like e-mails, in a fast and efficient manner. Most importantly, if you type properly, then it will reduce repetitive injuries like carpal tunnel syndrome. There are many benefits of learning how to type correctly.
I didn't have time to answer the question. Hope this helped you