Number 8 is: Optimize the page to load fast, as fast as possible and look great. My question is the following: How google determines if a page ''looks great''. What criteria is it based on to evaluate and compare different websites? I know there are many tools available that will point out what I should do to improve my website speed but I did not find tools nor websites that would help me optimize my webpages looks....

While backlinks are still an important factor used by search engines to determine content quality, linkless mentions are given more weight than ever before. This is partially due to the perception is that linkless mentions are more genuine, unlike black hat SEO techniques like paid links. Social media mentions are also playing an increasingly important role in evaluating website quality.
"I wanted to thank you guys for everything you've done for my company. When I first went to Curt for help about a 1.5 years ago, I was a very tiny company. We're now doing about 1500 jobs a month, and I give a lot of credit to you guys for the exposure. It's been life changing for me. I was working 12 hour days, 7 days a week for 2 years. I am finally able to back off some because I can afford office help as well. Thanks for being so great at what you do. I still don't know what that is exactly, but thanks for doing it so well."
On April 24, 2012 many started to see that Google has started to penalize companies that are buying links for the purpose of passing off the rank. The Google Update was called Penguin. Since then, there have been several different Penguin/Panda updates rolled out by Google. SEM has, however, nothing to do with link buying and focuses on organic SEO and PPC management. As of October 20, 2014 Google has released three official revisions of their Penguin Update.

Thanks for the helpful information discussing the differences and similarities between SEO and SEM. The information was enlightening because a search engine optimization company like the one that I own is relatively new at starting. We believe everyone should always check out their sources because every different perspective is very different so all approaches can be understood differently.