Spelling, Grammar, Punctuation and all the rest that makes your story a pleasant read.
Nothing takes the pleasure out of a good story like horrible misspellings and crappy grammar. On the same note, sometimes poor spelling and bad grammar can be instrumental in a story if you're trying to convey a specific scene or capture the way a person speaks.
100 Most Often Mispelled Misspelled Words in English
and
150 More Often Mispelled Misspelled Words in English
You'd be surprised at how often these words are
misspelled, even with the use of spellchecker.
Commonly
Misused Words and Phrases
This page is a MUST for anyone who confuses
THEY'RE, THEIR and THERE. Features a list of commonly misused homonyms.
Punctuation Made Simple
Features definitions of colon, apostrophes,
semi-colons, etc as well as examples on how to use them.
Dictionary, Thesaurus, Encyclopedia and Translator
All on one site! You simply click the tab you
need, type in your word and voila! especially recommended is the thesaurus,
using 'he said' is fine a few times, but used repetitively becomes stale and
boring.