All creative writing revolves around proper grammar and punctuation. Grammar is both easy (we all know the parts of speech) and incredibly difficult (YOU try writing without adverbs and passive verbs). 90% of the "effort" in writing a novel, screenplay, or poem goes into making sure each sentence is structured just right. The plot, characters, and settings are much easier to create than a perfect sentence!
For those of you who, like me, struggle with perfectionism in grammar, Grammar Book is a great resource to check out. It is a simple, easy-to-use guide to the basics of grammar, punctuation, and effective writing.
It covers the easy rules: Nouns, verbs, pronouns, periods, quotation marks, question marks, exclamation points, capitalization, homonyms, how to write numbers, etc.
It covers the rules that should be easy, but which often end up being hard: How to use commas and how many to use in sentences, subject-verb agreement, colons and semi-colons, when to hyphenate, basic sentence phrases and clauses, who vs. that vs. which, etc.
It covers the really tough rules: How to use adverbs properly, who vs. whom, when and where to use prepositions, etc.
There are even sections on "Effective Writing", a list of simple tips to help you improve your creative writing style.
This site teaches the basics of proper grammar, making the rules as easy to understand as possible. For those who want to learn to write better, more streamlined sentences, paragraphs, chapters, and novels, this is a resource definitely worth checking out!