Hi i am back...can someone review my site

Can someone take a look at my site mijnautomatischegeldmachine(dot)com
As you see i have a responsive theme but it looks not so good on mobile devices? The most important for me at this moment is to provide my users with a subsite and a webshop. If possible i want to give all users a blog with preset banners by using new blog templates and i also a webshop. Please can you investigate the multi site instalation and give me advice what is the best i can do? I think marketpress is the best but i do not know which steps to take...Please advice...if you need my credentials to login let me know?

Kind regards