Classes in vba - summer holiday readings

http://www.cpearson.com/excel/Classes . aspx

www.ozgrid.com/forum/showthread.php?t=45621

visualbasic.ittoolbox.com/groups/technical-functional/vb-vba-l/inheritance-and-class-modules-869663

www.wiseowl.co.uk/blog/s237/classes.htm

m.youtube.com/playlist?lis=PLE750D2254A6CB125&itct

http://vbadeveloper.net/optionpricerclassesdesignvba.pdf

www.vb-helper.com/howto_interface_inheritance.html

www.bettersolutions.com/vba/VID973/LI743311912.HTM

Important keyword IMPLEMENTS
www.bettersolutions.com/vba/VID973/YN011720334.HTM

Adding functionality with classes
https://www.microsoftpressstore.com/articles/article.aspx?p=2225071&seqNum=2

www.cimaware.com/resources/article_39.html

www.wiseowl.co.uk/blog/s410/flappy-bird-excel-vba-class-modules.htm

bytes.com/topic/access/answers/195390-faking-inheritance-vba-remove-code-duplication

ramblings.mcpher.com/Home/excelquirks/snippets/classes