University of Victoria (Canada)
University of Victoria: Grammar Topics
A large collection of concise explanations of various aspects of English grammar and usage. All topics include exercises that can be done, checked, and corrected online. Solid resource for English language learners at the intermediate...
Capital Community College Foundation
Guide to Grammar and Writing: Writing Concise Sentences
Why write five paragraphs when you can say what you want to say in two? Learn how to make the most of your words and sentences to get your point across without being too wordy.