In order to promote the studies of subterranean fauna and its proper sampling, especially in the project region, we prepared guidelines for sampling invertebrates in caves and springs and an infographic on molecular analyses of the collected samples. This is intended to be of help to students, naturalists and researchers, who are interested in contributing to better knowledge of the diversity and distribution of subterranean fauna. It needs to be noted that a lot of sample processing needs to be done in the suitable laboratories, so cooperation with equipped institutions or universities is more than welcome. The guidelines are available here: https://subbiocode.net/educational-material/