Well I'm 2 thirds the way through Marks tutorials and they are well worth the cost.  I'm doing the pay as you go online streaming without a hitch.  There is so much to Carrara that I've still can't believe all that's included.

An aside for those looking at screencasting software the longtime opensource free one has finally been upgraded.

camstudio.org/blog/general/camstudio-25-beta-1-released

Cheers

Radio Guy