Chris Coverdale has written up this great introduction to Public Key Cryptography and how it's used in Bitcoin. If you've ever wondered how it's possible that your Bitcoin address is okay to share widely, while your private key is not, definitely give this article a read. He even includes a really interesting analogy of the Discrete Log Problem using a billiards table which I haven't seen used before.
Russell O’Connor tackles the mind-bending claim that if you pick a random point in time, then you can expect the previous bitcoin block to be mined 10 minutes in the past, and the next bitcoin block to be mined 10 minutes in the future. 🤯
If you spend any time around Bitcoin, you'll for sure have run into people using the term "hash" or "hashing" pretty much constantly. Thankfully, Liberty York has written up a terrific explainer to get you caught up to speed on Bitcoin's underlying and crucial piece of tech. After you've finished that, I highly suggest checking out some of her other recent posts like this one on why Alpacas are Masters of Bitcoin 🤣