You should have created this thread in the Tutorials section of the forums... but a tutorial for making TD maps is already available anyway: http://www.sc2mapster.com/wiki/galaxy/tutorials/
(editing for beginners - TD explanation/tutorial by OneTwoSC)
Well , I made a little TD game just to help beginner to understand how trigger is working . This is very simple , but I hope this map will help you .
You should have created this thread in the Tutorials section of the forums... but a tutorial for making TD maps is already available anyway:
http://www.sc2mapster.com/wiki/galaxy/tutorials/
(editing for beginners - TD explanation/tutorial by OneTwoSC)