HTML errors and warnings in wordpress site

Hello,
My website: http://www.opleidingkraamverzorgster.com is checked on the validator. Now i have 5 errors and 2 warnings on my homepage.This is a wordpress website.Im looking on how i can solve this problems but how bad are they for my rankings in google??
Thnx for the answere.
Greatings Stef 		 	   		  

Received on Saturday, 29 December 2012 13:53:37 UTC