first off, if he was running/walking, i would actually say the gliding was decent. angles/colors/exporting can use some work.
secondly, t3i has the inbetween isos (unlike the 7d/t2i). keep your iso at 160 at all times (unless shooting lowlight, in which case remember to keep it in multiples of 160).
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and lastly, it is a general rule of thumb for dslr users to double their frame rate to find your native shutter speed. so, shooting 60fps=1/120(125) , 30=1/60, 24=1/50(60).