In this blog, you'll find examples of argumentative (for and against) compositions, letters (formal and informal), e-mails, articles, reports, reviews, narrative compositions...and some helpful tips!!
Some tips to improve your writing
This is a page where you can have a list of connectors with grammar explanations and exercises on line to practise them
It is also important to use punctuation correctly. Have a look at this:
Don't start writing without a plan!! Have a look at this!!