Use the guide it is up to date enough, not much has changed in terms of building.
So do you mean in general useful programs or useful for benchmarking and overclocking because Proximon's list is good for benchmarking and overclocking programs.
General (arranged by order of installation):
Microsoft Security Essentials (or other security suite)
Opera (my favorite web browser keep IE as there are some compatibility issues)
Now Proximon's list add:
MSI afterburner (works on not just MSI cards)
then install games, word processor, and photo editor/manager, and video editor, and media player of choice