Ok, to get the product off the official website of adobe, go to this link and push the button saying "download trial"
This will get you downloading a program saying "CreativeCloudSet-up.exe"
Click on the file and setup creative cloud.
Now, listen up, you're going to have to create an adobe account with an email you have, I know, it's stupid, but the site is trustworthy. So, go back into adobe.com and create an account, the button should be in the top right hand somewhere.
After you've created your account go in creative cloud and sign in to the program. Then view the programs you want to download and search for photoshop. The newest version should be there. Click download and it will instantly download the trial for adobe photoshop (trial)
OR (For the easier way)
Go to this LEGAL site and download both parts of photoshop cs6 TRIAL
Remember registering photoshop with cracks IS illegal yadda yadda, blah blah
Well those are the two easiest and trust-able ways to download a free trial of photoshop cs6