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World Wide Web Basics Informatics Training for CDC Public Health Advisors Points to be covered Basic overview The Web as an information resource How to get around Examples of some useful pubic health sites Some tips Overview - Internet Computer networks linked through use of common software protocols (TCP/IP) Applications e-mail, remote computer use, transferring files mail lists & news groups interactive information delivery services search tools Overview - World Wide Web Includes multi-media resources (sounds, pictures, video) Accessed via “browser” software Netscape Navigator vs. MS Internet Explorer Documents linked through hypertext Enables point-and-click navigation Following links = surfing the Web Glossary HTML - hypertext mark up language URL - uniform resource locator = web address hypertext = hot link = link (home) page - a single document/file viewed with a browser may be several pages long may have subsidiary & external links How to get around Browser window layout pull down menus control panel buttons “location” box Basic navigation important buttons: back, home, go Open, Home buttons “Where am I?” Anatomy of a URL a URL tells you where you are, and something about what you’re looking at http://www.specific.general.domain/name.html US domains: gov, edu, org, com, mil, net examples: http://www.doh.wa.gov http://healthlinks.washington.edu/nwcphp/ Home pages Can be institutional or personal Logical grouping of pages constitutes a web site Pages may also link to other sites May provide original, local information and/or compile links to other sites Uses of a home page For user on ramp - convenient starting point quality filter - links have been selected organizer - can provide framework For author publication - dissemination interactive communication or service medium advertisement Uncle Sam on the Web DHHS, Public Health Service CDC – http://www.cdc.gov/ – MMWR, WONDER, Prevention Guidelines, other databases and publications NIH – http://www.nlm.nih.gov/ – NLM - MEDLINE and other databases healthfinder TM http://www.healthfinder.gov/ University sources Healthlinks http://healthlinks.washington.edu/ BioSites http://www.library.ucsf.edu/biosites/ HealthWeb http://www.ghsl.nwu.edu/healthweb/ MEDLINE produced by National Library of Med. bibliographic database published, peer-reviewed research broad coverage of health care can now search free using PubMed & Internet Grateful Med http://www.ncbi.nlm.nih.gov/PubMed/ http://igm.nlm.nih.gov Some tips plug ins - helper applications saving (downloading) files - where? loading images - on or off? printing - how big is that page? source/page code - to learn HTML file/page information