This is my link dump of advice for those who want to start a career in information security. I may post my own advice soon, but for now this is a great list from people way smarter than I am.

Lesley Carhart:

https://tisiphone.net/2015/10/12/starting-an-infosec-career-the-megamix-chapters-1-3/

https://tisiphone.net/2015/11/08/starting-an-infosec-career-the-megamix-chapters-4-5/

https://tisiphone.net/2016/08/26/starting-an-infosec-career-the-megamix-chapter-7/

Daniel Miessler:

https://danielmiessler.com/study/infosecconcepts/

https://danielmiessler.com/blog/build-successful-infosec-career/

https://danielmiessler.com/study/infosec_interview_questions/

https://danielmiessler.com/blog/infoseccerts/

Parisa Tabriz:

https://medium.freecodecamp.com/so-you-want-to-work-in-security-bc6c10157d23

Charlie Miller:

https://krebsonsecurity.com/2012/08/how-to-break-into-security-miller-edition/

Bruce Schneier:

https://krebsonsecurity.com/2012/07/how-to-break-into-security-schneier-edition/

Thomas Ptacek:

https://krebsonsecurity.com/2012/06/how-to-break-into-security-ptacek-edition/

Richard Bejtlich:

https://krebsonsecurity.com/2012/07/how-to-break-into-security-bejtlich-edition/

Jeremiah Grossman:

https://krebsonsecurity.com/2012/07/how-to-break-into-security-grossman-edition/

Michal Zalewski:

https://lcamtuf.blogspot.com/2016/08/so-you-want-to-work-in-security-but-are.html