Philip Skerry's "Writing Errors and their Ways: Correction Strategies for the 21st Century" is a compact but comprehensive survey of current errors bedeviling Standard Written American English with tools to correct them. Based on up- to-date research, Skerry's book wears its scholarship lightly while giving sound analysis and guidance as regards many of the current usage quandaries. Acknowledging that personal pronouns are in a state of flux because of societal changes, it provides common-sense solutions to these ambiguities. Additionally, Skerry addresses perennial errors such as subject-verb agreement, the who/whom confusion, along with many other mistakes found in today's published and internet language. All this is done with great clarity of presentation supported by cogent examples.