#2 When you load the theme it will not look like the demo!
Don’t fall in love with how a WordPress theme looks on the demo page. All themes look lovely when they’ve been set up by the developers.. and yes, the site can look like that but remember that the text and images have been laid out in their most attractive way. Your theme will be almost empty so don’t fall in love with a theme because of how it looks. (See pictures below demonstrating demo v reality.) Some themes do have an option to import the demo version but you will also import lots of scripts, images etc. which it is wise to be clean up if you are not using them – are you experienced enough to do that?
So rather than fall in love with a demo site, think about how you want your site to look and then look at the functions and options of things that can be easily changed. Many theme functions will require much more WordPress (or even coding) knowledge than you realise so keep it as simple as possible. If you already have I.T. help then ask their opinion!
Even at BizDoktor, though we have lots of experience, we always recommend one theme (Enfold) which we then re-design for each client. We are very reluctant to work with other themes unless it is something that requires special functions (such as a hotel). Every theme has to be learned, just installing the theme is the easiest part!