For me its not the fundamentals, understanding how transactions work or how a wallet holds keys is pretty straightforward. It's keeping up with everything the community is building on top of it. New proposals, protocol changes, privacy tools, layer 2 stuff, it moves fast and there's no single place to follow all of it, then try to understand it. If anyone has a good source that shows the important developments id love to know about it.
For me its not the fundamentals, understanding how transactions work or how a wallet holds keys is pretty straightforward. It's keeping up with everything the community is building on top of it. New proposals, protocol changes, privacy tools, layer 2 stuff, it moves fast and there's no single place to follow all of it, then try to understand it. If anyone has a good source that shows the important developments id love to know about it.