Undergraduate
Alex Guerrero, Advice for applying to PhD Programs in Philosophy
Bernhard Nickel, Advice for Writing Sample
The Numbers Game (the supply and demand problem in academic philosophy)
Dustin Lazarovici, Study Philosophy of Physics (Consider switching from physics/math to philosophy?)
David Albert, Philosophy of Physics (Short introduction)
Graduate
Eric Schwitzgebel, How to Publish a Journal Article in Philosophy: Advice for Graduate Students and New Assistant Professors
Daniel Dennett, Higher-order truths about chmess
David Wallace, Reading lists in philosophy of physics