Wordpress is much easier to set up, but you're also limited and may need additional plugins especially for your marketing. You can find help online for different programs to get Joomla or wordpress templates. I have use one from artisteer.com check the spelling, but it is something around there..find it on google.
For the first you must decide which you want to see your site. Then you can choose the platform. I cannot insist, because each of us has its own point of view. When I go with JOOMLA, it was considered more difficult, but come into details, I’m understand there is no impossible, you only need to work with your site seriously, if you want it worked for monetizing an income, only JOOMLA has opportunities for stable employment site.