Various links

Calculate Long-Lat distance:
http://excel.tips.net/T003275_Calculating_the_Distance_between_Points.html

Add flaggs to chart axis
http://www.get-digital-help.com/2014/09/23/add-pictures-to-a-chart-axis/

Free BI add-ins/apps for Excel 2013
http://office.microsoft.com/en-us/store/results.aspx?avg=zxl150&vtags=Data%20Visualization%20%2B%20BI&price=Free

118 Statistical functions - app (2013)
http://office.microsoft.com/en-us/store/rapidstat-WA104330018.aspx?queryid=4d5b15d4-cfff-40c8-b466-fd0776e17b22&CTT=1

Excel and Power BI-video series
http://blogs.msdn.com/b/powerbi/archive/2014/07/08/getting-started-with-excel-and-power-bi-series.aspx?

Run Excel 2013 remote on any device
http://www.powerpivotblog.nl/excel-2013-power-pivot-and-power-view-on-any-device-with-azure-remoteapp/

Optimizing picking paths:
http://www.get-digital-help.com/2014/07/04/optimize-pick-path-in-a-warehouse/

Axis scaling - VBA
http://peltiertech.com/WordPress/link-excel-chart-axis-scale-to-values-in-cells/

Franken team
https://sites.google.com/site/e90e50fx/

Display image on mouse over - VBA blog
http://www.excelvbamacros.in/2012/03/display-image-on-mouseover.html