Hello, my site is pretty dang slow and I don't know how to administer the recommended changes. Is there an easy fix for any of these? My indexed URLs recently went from 70k down to 30k and I believe that speed could be one of the reasons as to why.
-Parallelize downloads across hostnames
-Combine external CSS
-Serve static content from a cookieless domain
-Leverage browser caching
Look forward to any type of feedback/solutions!!!!