Prof. Greg Mankiw's advice for aspiring economists
Prof. Susan Athey's professional advice to aspiring Ph.d students in economics
Prof. Stieve Pischke's template on getting started in economics research
Noah Smith's great take on having Ph.D in economics
Duke Universities resources on writing research papers in economics
Alvin Christian's guide for perspective economics ph.d students in economics
Alvin Christian's awesome guide on doing RA'ships in economics
Prof. Mankiw's advice on writing well in econmics papers
An excellent Ph.D guide in economics prepared by student's from UBC, University of Minnesota, UC San Diego, & Uni. of Varginia
Why aspiring economist need maths?
American Economic Associations resources for economics students
10 Simple rules of for writing a Literature Review