Since pages are static, you will find that you wont need to change them that often, but when you do, here is how.

I want to edit a page:

1. Log in to your administration page. ie. “http://yourUrl.com/wp-admin”
2. Click Manage
3. Click Pages
4. Click Edit on the post you wish to change
5. Once you have made the changes, click the Save button

I want to delete a page:

1. Log in to your administration page. ie. “http://yourUrl.com/wp-admin”
2. Click Manage
3. Click Pages
4. Click Delete on the post you wish to change
5. It will Ask you if you are sure, click OK