The stuff that is available for everyone, kids and adults, when it comes to learning about science is just amazing. As someone who learns best when I am learning on my own, I’m really happy to while away my hours re-learning (or learning anew) topics that I wish I had long ago mastered. (How to structure this into a proper education remains a mystery and I fully recognize that the weakness of the autodidact is in not understanding all the connections and relations.)
I have two tabs open right now on my tablet: the [Phylogeny Wing] of the University of California Museum of Paleontology and the [Kerbal Space Program].
[Phylogeny Wing]: http://www.ucmp.berkeley.edu/exhibit/phylogeny.html
[Kerbal Space Program]: https://kerbalspaceprogram.com/index.php