Easy way to use Google geocoding through Excel:
Step by step instructions on reading/parsing XML data using R-Project. from Informit.com written by Tobi Bosede
Another blog by Lisa Williams, author of Life and Code, a blog that curates beginner resources on learning to program for journalists and other busy people.
Link to data library from the World Bank.
Very useful link: How to take data from MySQL and output GeoJSON using Python.
A large collection of mapping data published by the City of Chicago regarding the City of Chicago:
Link to mapping data on Tennessee provided by the state of Tennessee. Data includes roads and interstates, administrative boundaries, school district boundaries, and more.
GIS datafilee published by CalTrans. Includes airports, highway network, truck network, AADT, rail data, and administrative regions.
Link to state of Oregon GIS data.