Written in Spanish, this booklet explains how to start an ERIC collection in a library or information center. Three levels of collections are described: minimal, intermediate, and complete. A minimal collection is discussed in terms of the necessary materials (Resources in Education--RIE, Current Index to Journals in Education--CIJE, Thesaurus of ERIC Descriptors), physical requirements, equipment, foreign and domestic estimated costs, and access to actual copies of RIE documents and journal articles. The ERIC microfiche collection, physical requirements, equipment, and domestic and foreign estimated costs involved in starting an intermediate collection are described. A complete collection is discussed in terms of the costs and one of its components (computer search services). Three ways an agency can offer computer access to ERIC are described: another agency runs the search, the agency contracts with a commercial vendor and runs the searches itself, or the agency purchases the ERICTAPES and runs the searches on its own computer. Directories, indexes, and other tools which can enhance any collection, and ERIC training and orientation materials are briefly described. A listing of the ERIC clearinghouses and their locations conclude the booklet. (NQA)