That, and using a button to open a link with JavaScript is almost humorously atrocious.
Its so I can log Mixpanel events
You don't need a button for that, and I don't find that an acceptable excuse anyway since I don't care about that as a user.
I made this in a couple hours, just trying to get something out. Will get better. Plus I'm not a designer or a programmer, my speciality is physics. So really learning on the go.
Curation implies some knowledge of the material being curated. If you're not a programmer, why should you be relied on to recommend educational materials related to programming?
I have friends who are experts in the other fields.