This book helps teachers and staff developers understand how to take charge of teacher professional development via the Internet. The book features five sections with 14 chapters. Section 1, The Internet and Its Essential Tools, includes: (1) What Do I Need to Know About the Internet? (2) Making the Most of Your Electronic Mail, and (3) Accessing Internet Resources with a Web Browser. Section 2, Creating an Action Plan, contains: (4) How To Develop an Action Plan. Section 3, Building Virtual Professional Communities, includes (5) Virtual Communities and Professional Development, (6) Community Mailing Lists, (7) Newsgroups, and (8) Other Kinds of Virtual Professional Communities. Section 4, Doing Research on the Internet, offers: (9) Why Use the Internet for Your Research? (10) Finding Information on the Internet, (11) Searching Bibliographic Databases, (12) Finding Other Kinds of Information on the Internet, and (13) Devising an Internet Research Strategy. Section 5, Ahead to Tomorrow, contains: (14) Where Are We Headed? (potential challenges and new professional development options). The appendix provides further readings. (SM)