From the first day on I can edit other peoples questions and answers.
What is a good edit? Why and when should I do it?
Edit questions that are on topic here and not duplicates.
Fix all problems in one edit. If you edit the title, make sure the post body and the tags are fine too.
Don't be shy. At least 10 of our top reputation users are not native English speakers. Your help is always welcome.
Start with the title. 90% of our visitors come from search engines. They see the title first. Let them know we have a question here that fits their need.
The title should be the question in a very compressed form. It should be a complete sentence without any error. A trailing question mark is almost always required.
The title should not just repeat the tags.
Remove the words help, problem, question and WordPress.
The first tag will be set before the title. Again: Think about search engines. Make sure the first tag is the most significant.
Remove noisy tags. Avoid tags that are too similar. Those are merge candidates.
Review your edit: Is it complete? If the reviewer has to improve it you don't get the reward and your name will not show up.
Describe what you did. Make sure it is as good as your edit.
I have seen this message far too often:
Uhm … no.
Make sure your edit is not too minor. We will reject very small edits.
When you're done: Don't forget to vote! If the post was worth your time – vote for it.
You earn +2 reputation for each accepted edit – until you hit 1000 wall. But, please, don't stop editing then. :)