The basic linkage service of an information and Referral (I and R) center is discussed in this manual. By itself, information-giving can be very important. It helps make people in a community more aware of the services available to them, and it can go a long way toward making their lives healthier and happier. In addition, if records are properly kept, this basic I and R service can provide important statistical information about the kinds of problems people have and the extent of their occurrence, plus valuable information about the ability of the community to cope with these problems. For the community, the I and R center is an access point and an entryway to a large and complicated service network. It is also a point at which feedback is available concerning how well the needs of people are being met. Topics under consideration include: (1) interviewing and information-giving; (2) using the resource file; and (3) knowing what referral is, and when it should be used. "Caller Interview" and referral forms are also discussed. (Author/PC)