How do get the trial for a mac computer?
Which Adobe software are you trying to try on your Mac? Also what version of Mac OS are you using?
I want to get In Design and its Safari.
You can locate more information regarding InDesign as well as a link to the trial at http://www.adobe.com/products/indesign.html.
I already tried that, but I can get installed?
Not sure are you receiving an error message? What version of Mac OS are you using? What happens when you try to download or install the software.