If ya don't wanna mess with programs like Photoshop or w/e - one of the easiest solutions is to use an external host such as Image hosting, free photo sharing & video sharing at Photobucket
which has quite a few "edit" features like cropping, resizing, etc and provides the [img] tags as a quick link for your convenience.
For uppin' full size pics and not swampin' peoples bandwidth - click the "go advanced" button under the message box, scroll almost alla way down and you'll see a "manage attachments" button. Click it and it'll offer you the choice of uppin' pics from yer puter and/or from an external host like 'bucket.
Welcome to the forum pwrobleski, good ta have ya here and we're lookin' forward to those pics