Alternative Map Projections
https://public.tableau.com/s/blog/2014/08/fun-alternate-map-projections
Custom Map
https://public.tableau.com/s/blog/2014/04/custom-mapping-mayhem
https://public.tableau.com/s/blog/2014/08/gps-viz-hiking-washingtons-trails
Special use: create a polygon from a single coordinate
https://blog.databender.net/2016/06/17/manufacturing-a-polygon-from-a-single-latlon-coordinate/
Hex
Blog tutorials:
https://blog.databender.net/2015/03/06/im-too-hexy-for-this-viz/
https://blog.databender.net/2015/03/07/im-a-hex-machine/
https://blog.databender.net/2015/10/28/even-hexier-than-before/
https://blog.databender.net/2016/05/10/you-can-never-be-too-hexy/
Workbooks:
https://public.tableau.com/s/gallery/historical-us-presidential-elections
http://datajedininja.blogspot.co.uk/2016/04/to-bee-or-not-to-bee-ironviz-2016-first.html
Data & Web 