Members can edit their posts by first hovering with your mouse over the 'quote' button on the bottom right and then clicking the 'edit' button.
You'll be shown a quick edit box with a few functions to edit your post. Also, you can use the full editor button for all other edit functions.
From there you can change the title, add tags, etc.
Feel free to ask questions. We'll get to them in time. Thank you and enjoy the site!