Download videos from Udemy

it’s works!

then we can backup some paid classic course for offline review.



please put respect to instructor and use it in good way!




SketchUp tips

選取物件(selecting objects):

drag from right to left,
all the objects across the selection.

drag from left to right,
only the objects completely inside the selection.


Ready for Mountain Lion?


Here’s the list for compatible model and year:

  • iMac (Mid 2007 or newer)
  • MacBook (Late 2008 Aluminum, or Early 2009 or newer)
  • MacBook Pro (Mid/Late 2007 or newer)
  • MacBook Air (Late 2008 or newer)
  • Mac mini (Early 2009 or newer)
  • Mac Pro (Early 2008 or newer)
  • Xserve (Early 2009)

A good list of compatible and incompatible apps is maintained in a searchable database by RoaringApps, check it out here.

Then, most important is Backup! Backup! Backup!

Once everything done,

Buy & Install,

Remember, if you bought a new Mac recently, Mountain Lion is free for you.

Also, if you are familiar with Mac OS X, strongly recommend you install with usb thumb disk as following step.(updated! new easier way to do same thing)
Get the newest version of LinoDiskMaker free from the developer

Good Luck!