Welcome tot he Guild Parmenion! You have come to the right place to learn the craft. Your first stop ought to be the tutorials section, or more specifically, the sticky on tutorials in PDF format (since it is well organized). Once you have read through some tutorials and are ready to attempt your first map, start a WIP thread and post a picture of your fledgling map. That way you can receive early feedback.

Cheers,
-Arsheesh