Wonderful tutorials that may come to your aid.

[NiftyVardr]

Map making tutorals:

http://www.youtube.com/watch?v=cW06Rat6lq0

http://www.youtube.com/watch?v=s1HLjeownUs

http://www.youtube.com/watch?v=Nm59FCy4NJ4

http://www.youtube.com/watch?v=IB7PjgGt1E4

Preset Tutorials:

http://www.youtube.com/watch?v=GanQl911Y1g

http://www.youtube.com/watch?v=vIIl-jP4NYs

http://www.youtube.com/watch?v=6_UYOf8Dk00

http://www.youtube.com/watch?v=dgE93yqoJOU

http://www.youtube.com/watch?v=OMlEi0v6DlY

http://www.youtube.com/watch?v=msbReB9Qz3E

Meshing:

http://www.youtube.com/watch?v=09iwc8Yt8Fk

http://www.youtube.com/watch?v=kDZ31eNsfaY

http://www.youtube.com/watch?v=s52F1Zr9Htg&feature=results_video&playnext=1&list=PL312DF08FDC6EC984

I take no credit for these quite helpful tutorials, all credit deserved goes to there rightful owners.