error structured data

Hi, I have problems with my site: http://www.ecolibero.it
In google webmaster struments, there are several errors: missing update, missing author, missing name. 344 errors! I need to know how I can to fix this problems. I hope that there are solutions for my question. I’m not expert about wordpress and php and html or css but if you tell me the instructions for resolve all, I will be happy. Thanks.