This paper describes a number of different types of training aids currently employed in online training: non-interactive audiovisual presentations; interactive computer-based aids; partially interactive aids based on recorded searches; print-based materials; and kits. The advantages and disadvantages of each type of aid are noted, and a table showing when in a training program and for what purpose each of the particular types could be used is provided. The appendix lists some currently available training aids of each type. (Author/THC)