英文原版Teach Yourself VISUALLY OS X El Capitan 1st Edition

Yourvisual,guidedtourofOSXElCapitanWithclear,step-by-stepinstructionsandplentyofrichvisuals,TeachYourselfVisuallyOSXElCapitanwalksyouthroughthelatestupdatesofOSXanddemonstratestheessentialtasksyouneedtoknow. Complementedwithscreenshotsonalmosteverypage