The document discusses various types of communication used in different contexts. It defines critical reading as going beyond basic understanding to carefully evaluate, consider strengths and weaknesses, and examine how a text fits into the broader academic context. Critical readers make judgments based on evidence, are open-minded yet intellectually autonomous. The document also discusses listening, communication aids and strategies using technology, communication for various purposes like informing, persuading and arguing, and communication in the workplace through verbal, written, visual and non-verbal means like emails, letters, memos, reports and meetings.