Create a Custom Field Type from a Custom Picker

http://www.ilikesharepoint.de/2013/03/sharepoint-2010-create-a-custom-picker-with-dialog/
http://www.ilikesharepoint.de/2013/03/sharepoint-2010-create-custom-fieldtype-with-picker-dialog/

A person who is very new to SharePoint development will not be able to quickly understand these articles. Hopefully I'll have time to re-write these articles and make it easy to understand for beginners.