Maltaannon video tutorials are back up and there's several interesting tutorials available besides Simple Object Removal. Maltanon sometimes uses its own CustomEffects, presets with expressions that look and behave like standard plugins -- and require a DLL install.
Covering some of the same ground is Photoshop Prep for 3D Animation (Photoshop but oriented for Motion 3) by Mark Spencer.
Alan Shisko has a couple of video tutorials that explain basics of AE camera parenting and NTSC field order interpretation.
Yet another fresh resource is FreshDV Film School: The Art of Pulling Focus (Part 1).