2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59533A new method to derive presentations of skein modules is developed. For the case of homotopy skein modules it will be shown how the topology of a 3-manifold is reflected in the structure of the module. The freeness problem for q-homotopy skein modules is solved, and a natural skein module related to linking numbers is computed.30 pages, 2 figures, Latex uses curves.sty and epic.styGeometric Topology57M27; 57R56text