The error you are getting about MySQL is a socket connection error. This usually happens if you are using the file system connection to MySQL through the sock file. You can try making it use the http method to access the server by updating the host setting from localhost to 127.0.0.1 in the connections file. Make sure to create a backup of the file first in case you need to go back to it.
For the problems with the images it looks like you might not have the paths set correctly at least on the home page. Here are the URLs for the SWAN WINTERIZING AND BYPASS KIT RMQ 332 from the home page and the one from the details page that shows the picture:
So it seems that the path to the image on the home page is incorrect, you should check your server to ensure that you have the image properly uploaded.