step 1:-download
http://kaibacorporation.org/

step 2:- check if you have a program that unzips files (WinRar ,7zip)

step 3:-after the program(YGOpro) is downloaded , put it in a folder that you remember

step 4:-open the file using Winrar or 7zip , extract it to your Desktop

step 5:- run it and it will work good

note 1:-
well,sometimes you wake up the next day and you cannot find the launcher of the game , incase that happens go to the YGOpro.zip file(the 1 that you downloaded and saved in the folder you remembered)and reinstall it on your desktop , it will ask you to replace the (YGOpro) files, its ok all of your decks will stay the same , no threat in that, and hopefully it will run good again

last note:-
when you launch the game , it might say the program is not responding wait for up to 2 minutes and it will work , if not use note 1(above) and it will run good

have fun in the game , tag duels are possible there