Emacs

• Emacs wiki
• Learn Emacs lisp in 15 minutes
• Barik's guide to Emacs
• Installing emacs-goodies-el including the Maple mode on Emacs 24
• remote file editing using emacs

AUCTeX

• Starter kit

Org Mode

• Emacs Org Mode
• Writing papers using org mode
• How to manage and export bibliographic notesrefs in org mode
• Using bibtex from org mode
• Research paper management with emacs org mode and reftex
• Site creation with org mode
• Syntax highlighting in org-mode