Campaign Creations

Well, I just wanted to know if there's a way to open the campaign's maps on the editor, or a site where I can download them. I want to use them as a 'guide' (using the editor is harder than expected, and some help from them would be nice), but I don't know how to open them with the editor. I'm doing something wrong or it is that there's no way to open them?

Thank you in advance.

File -> Open -> Campaign tab.

Hmm, true, I didn't noticed that tag before. Looks like I was looking on the wrong place. I still need to get accostumed to this. Thank you so much, sir!