Leonid Nemirovsky’s “Better than Nothing” routines are considerably better than most. He also has some tips and tutorials that you might find interesting. He has consistently updated them over the years.

http://home.pacifier.com/~nemi/

 

• 2002.11.22 : Cad Resource
• 2002.11.22 : Block Manager and Other Routines
• 2004.01.12 : Art Deco Apartment @ Churchgate
• 2006.04.29 : Drawing Gateway
• 2002.11.22 : IObjects
• 2008.09.04 : Concrete’s Contribution to Global Warming