Recently I implemented a travel-orientated website with a complex interactive map functionality. I made the highly customized map by installing the OpenLayers module, which is a extremely extendable and not-easy-to-configure project. I believe most drupalers would have some try-errors hard time to understand and deal with this module, at least I did, though the quality of its documants is quite good. I conbined my user ecperiences with the instruction from drupal.org, made this Prezi slide for introducing OpenLayers module in Drupal Taiwan Meetup yesterday. Wish it can help more people who are interesting in OpenLayers and map website.