Here are some interesting articles and videos. 

• Paths to Math: Jinyoung Park

• CHAT (Career, History, And Thoughts) series (recordings)

• Math-life balance, series of interviews with mathematicians by Mura Yakerson

• Mordell's review, Siegel's letter to Mordell, diophantine geometry, and 20th century mathematics, by Serge Lang

• The Singular Mind of Terry Tao, by Gareth Cook
  Have you heard of the story of young Terence Tao crying in the middle of the quantum physics final? This article discusses Tao's personal life and the difficulties he had while studying mathematics like all other mathematicians. It taught me that great figures are not always like what we may imagine.

• A Path Less Taken to the Peak of the Math World, by Kevin Hartnett
  This is an article about June Huh, who once wanted to become a poet, then a science journalist, and then solved a long-standing conjecture in mathematics. I found this story beautiful, and it has shaped my idea of mathematical study/research into a somewhat different form. Here is a paragraph in which he recalls the algebraic geometry course taught by Hironaka Heisuke.
  “The math students dropped out because they could not understand anything. Of course, I didn’t understand anything either, but non-math students have a different standard of what it means to understand something,” Huh said.

Here are some useful links.

• Affine root systems (Jeffrey Adams' webpage)

• Visualization of affine Weyl groups by Joel Gibson

• Matt Emerton's posts for students

• Angela Gibney's webpage on The Early Career

• Lunch in the Time of Covid webpage (hosted by Andrew Kovin) contains many useful resources on career in general

• Kiran Kedlaya's arithmetic geometry conference list 

• MathMeetings.net

• Detexify