How do free and open maps compete with companies such as Google? Make maps and design geo-mashups with HTML and JavaScript.
Based on P2PU's OpenLayers course ( http://archive.p2pu.org/webcraft/online-maps-openlayers ), this course covers open source mapping with Leaflet.js
You will learn how to add your community to the global OpenStreetMap, learn the basics of interactive online maps, and research and design larger applications.