I've always wanted to understand Wiles proof for Fermat's Last Theorem. I have started on it but I have no good idea on how to approach the subject. Experts say that it takes decades of studying for a layman to understand it.
Web security because I'm a web developer who definitely builds unsecure applications. Unfortunately (and incorrectly, IMO) the full stack dev market doesn't really value security too much as it pertains to marketable job skills. For instance, I spend my time improving my Javascript skillset which has a greater impact on my bottom line at the moment.
If you can identify you're writing insecure code or building insecure apps you are just being lazy to do it proper way. Web security IMO isn't about learning a new thing, these are concepts that are part of the development flow.
Thanks for the resources. Not sure if calling me lazy is fair, I don't know what I don't know, but I'm almost certain my code isn't 100% bulletproof. Not because I see something blatantly broken and just decide not to fix it.
Textbooks can be good for this kind of thing. We read Operating System Concepts by Abraham Silberschatz in an OS class I took and it has a whole chapter on threads.The entire book is actually really good, each chapter reads like an essay discussing the topic in a natural way.
I want to learn an instrument. I'm afraid it's too late.
I also want to learn all the latest deep learning stuff. I'm learning, but the progress is slow.
#1 & #2 are excellent (and reasonably common) advice for any form of partner dancing, #3 is Argentine Tango-specific, but probably generalizable to equivalent foundational frame and technique in other partner dances (mutatis mutandis, e.g., gender-swapped if you happen to be female.)
But if you get to that level at all, you probably have the kind of innate talent or predisposition (which is not the same thing as body type) that Fenriss dismisses; lots of people do all those things and don't, even with a lot more time, reach that kind of level.
And, while they're valid and common pieces of advice, I think it leaves out some important things for most people. More important than having a male and female teacher, IMO, is having the right teacher for you -- both skill and personality fit matter and good teachers will know both roles (there is still value to having teachers which specialize in each role, but I would say this is less important.)