Originally Posted by PuneetRJ
copy paste whole steam folder
This didn't work for me, I tried to move it to another computer after downloading it and there was no info ANYWHERE in how to do it.
I had to:
1.- Copy and paste whole Steam folder
2.- Delete everything except Steamapps folder and Steam.exe
3.- Open Steam and let it update, it only updates the Steam client, when it's done you will have Dota 2 able in your Library.