I've been out of the loop on Google SEO for a couple of years. A couple questions. Does Pagerank still matter anymore? I know it was never the be all and end all, but 5+ years ago everyone was trying to get at least a couple PR6 backlinks and hopefully get a couple of their pages up to PR6+. I don't know whether that still matters anymore and if it does how much I should care. Most of the pages on a site that I need to work on show no PR because there are virtually no external links.
Another question I have is what is the maximum page size that Google indexes these days? I know that it used to be 100K way back in the day, but I recall that supposedly isn't the case anymore. Beyond user usability is there a certain page size I should try to be keeping under?
I have a site where afaik no SEO has been done in years so I am just trying to get up to speed here and what are the basics of Google SEO today.