Columbia University has a BreakWriting program that encourages students to write during their December-January semester break. Last year’s series of 16 posts have been put online and are well worth reading if you do any writing (or think about doing any). Each posting has oodles of useful, real-world advice, with plenty of tips and recommendations for being as successful as possible when it comes to writing (success here being measured in terms of actually writing, not commercial success).