Last week, Dr. Rick McGee (Associate Dean for Faculty Recruitment & Professional Development, Northwestern University) spend two days at Emorys, sharing his research on mentorship and alerting us to many great online resources for young scientists.
One such resources is the Collaborative Learning and Integrated Mentoring in the Biosciences (CLIMB) website.
In particular, check out the communication section of the CLIMB website. It has several tutorials that do a very nice job of walking you through the basics of clear sentences, the anatomy of a great paragraph, and very specific tips about writing NIH-style proposals. There's also tips for oral presentations.