I bought the animation and the lighting courses for Iclone 6, and they were both terrific for the program at the time, imo.
I can only speak for those 2 courses, but in both of those areas there have been some really significant changes in Iclone 7. The animation timeline has major changes, and it could be very confusing to try to follow along in the Iclone 6 courses, unless you were actually using Iclone 6. It wouldn't work the same. And that doesn't even cover the new curve editor.
In lighting too, there have been major changes with global illumination added in Iclone 7. Still, certain basics in the lighting would remain the same. Use of point lights, spotlights and direct lights is still applicable.
If it were me, I don't think I'd try to learn Iclone 7 by using Iclone 6 courses.