Merlin Mann over at 43 Folders has been doing some in depth articles that are nothing short of invaluable. These include the following:

Building a Smarter To-Do List, Part 1 and Part 2 – The best article on using a to-do list ever! This sums up all of his previous writing on to-do list effectiveness but expands on several of the topics.

Writing Sensible E-mail Messages – Become a good e-mail citizen. Create e-mails that give the recipient all the info they need (and none of the stuff they don’t) so that you can get what you want to achieve from the effort.

Amazing work and well worth the time it takes to read them.