The following resources are student handouts used by the Department of Rhetoric and Writing and the Undergraduate Writing Center at The University of Texas at Austin.
Writing Process
Style
Exercises to practice clarity and concision
The Purdue Online Writing Lab (OWL)
The Online Writing Lab (OWL) at Purdue University provides an extensive online repository for writing resources. The OWL houses helpful guides on grammar, style, mechanics, research, and citation.