1. With PRO theme you can use all your previously created posts and pages. After activating the PRO theme you will need to configure your site with the post and pages using user friendly Theme Options panel. It takes only few minutes to setup the PRO theme as like the PRO version theme.
After activating the theme, please setup homepage using following
– Go to Settings -> Reading -> Front page displays
– Click on radio button of Your latest posts
– Go to Appearance -> Theme Options and click on Restore Defaults in bottom side
2. To change the fonts Go to the Appearance -> Theme Options -> Basic Settings
Please check the documentation to setup and customize the theme