Once you've downloaded Freedom, you'll see the installer (FreedomInstall.dmg) in your Downloads folder. Next, double-click on FreedomInstall.dmg, this will bring up the installation. Drag Freedom to your Applications folder to complete installation.
Once Freedom is in your Applications Folder, double-click Freedom to begin and open up the client. The Freedom login window will pop up - sign in with your Freedom account, and then enter your OS X password when prompted.
Note that Freedom runs from the menubar. The menubar is on top of your screen - look at the top right of your screen and you should see the butterfly icon for the program. Click on the butterfly menubar icon in the top menubar to manage Freedom.
Clicking on 'Manage Freedom' will launch your browser, opening https://freedom.to, and allow you to start and schedule blocks or manage your profile.
If you're running into problems with Freedom, we've put together a list of common problems and solutions.