This document summarizes a seminar presentation on IEEE 802.11 wireless LANs. It discusses the architecture of 802.11 networks including the basic service set (BSS) which connects wireless stations to an access point, and the extended service set (ESS) which connects multiple BSSs through a distribution system. It also describes the different 802.11 wireless networking standards including 802.11b, 802.11g, and 802.11a and their speed and range capabilities. Finally, it discusses the different types of wireless stations defined in 802.11 based on their mobility within a BSS or between BSSs/ESSs.