To assist career education and career development practitioners in helping students use occupational information, this Practitioner File begins by discussing the role of occupational information in career decision making. The next section addresses considerations and concerns in using online information such as user proficiency, quality of information, equity of access, user readiness, and appropriateness of instruments. The following article describes programs supported by the United States Department of Labor under the umbrella of America's Workforce Network. Focus is on two national online occupational and career information tools available to a variety of users for a variety of purposes. First is America's Career Kit, a career development resource, that consists of four interrelated Web sites: America's Career InfoNet America's Learning eXchange, America's Service Locator, and America's Job Bank. Second is O*NET OnLine. A table describes some add-on uses of O*NET and O*NET OnLine. Other sections discuss some state career information sites and describe 17 additional Web sources of career information. A 39-item bibliography is appended. (YLB)