Since I had a little bit of downtime at my company I sat down to create a technical SEO cheat sheet  with all the latest best practices in the On-Page SEO world.
I always wanted to have some kind of reference I can go to and easily find what I was looking for in that specific situation. I hope that this tool comes a little bit closer to that goal and can help a lot of people in navigating the complex SEO universe.
And in a truly TL;DR fashion, I will keep this post short too and instead point you in the right direction: SEO Cheat Sheet 
Oh, and I hope you like our little astronaut and the corresponding wallpapers as well :)
For any questions or suggestions, don't hesitate to contact me.