A 10 minute YouTube video (non HD resolution) uses ~10-30 MB of bandwidth. I'd imagine the course videos would not use more than that and, if anything, it's probably less.
... little more about your background - non-native speaker can mean a ... after university. The kind of "non-native" speaker I was then ... Scientific American, but for a non-native speaker even reading newspapers ...
... are stealthy)
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No non-trivial valid conclusion can be ... ) despite what (d) said: No "non-trivial" valid conclusion can be ... what he even meant by "non-trivial" inferences. Ha.. I seriously ...