Is SEO hard? no, and you could do a lot worse than pick my brain on how it all works. I have written 2 SEO my general SEO guide here
http://infobunny.com/seo-guide-2018
and my more recent addition my Mobile SEO Guide here
http://infobunny.com/mobile-seo-guide
Both guides are ranking at around position 6 for their respective optimized keywords
SEO Guide 2018 and Mobile SEO Guide 2018 along with other phrases.
Both guides are 100% FREE ... NO OPT-INS ... NO DOWNLOADS .... NO PAYMENTS just good old fashion free information.
If your writing an article on SEO then you could do a lot worse than to link to my guides as a resource and if you do let me know I will share the life out of your post and help it get found. I will even help you optimize if that's what you need.