Do you know any good website with materials which teaches about writing skills ?

Question

Writting skills like reports writing, proposal writings, resume writing, and any kind of official communications

Writting skills like reports writing, proposal writings, resume writing, and any kind of official communications

Answer 1

I can see that you really need help. There are hundreds of websites that teach writing. Here's one of the best:
http://owl.english.purdue.edu/
Or try:
http://www.writing-smart.com/

Answer 2

I agree with the other responder's answer about the OWL through Purdue University. Also try this site for some actual templates as it looks like you are more interested in professional or business writing. It might help if you give us an idea of your writing level (such as for a business class in high school, college, or if you are asking about writing at your actual job).

http://www.ic.arizona.edu/~profcomm/writing/samples/index.html