This was good information, but I think a point needs to be made about people posting such information under pretenses that they are the source of such information. If you are sharing an informative or otherwise well written article, cite the source. It does not make sense to pretend that you wrote a piece here. There are some smart people participating in this forum; someone will figure it out.
good and concise. But it can be a bit misleading as the backlink is mentioned in a very subtle way, when in fact it is one of the most important. All the others are important too, and you should do all the methods of on-page SEO but backlinks should be the bulk of your SEO strategy.