Ask HN: Where to start learning more about Crypto/web Security

I don't know anything, and I am not too well schooled in number theory, but do know some as well as have some friends high up in mathematics that could help me out.

I know a small bit of basic crypto terminology and some concepts etc, but would like to know more

I want to learn everything, but I have no clue where to start, what to look for; perhaps what would be referred to as unknown unknowns.

I also imagine I would need to some more about servers, databases, etc.

Basically, can someone point me too some good starting points, resources, what I should be looking to learn etc.

Much appreciated HN.

RB