installed the game, but cannot find the link to launch the game,no indication where to start from!

There's no link to start GOG games, the GOG downloader is not a client like the one Steam uses, it's just a download manager.

The game was installed on your computer and you need to start it just like you did with pre-client games: you open the game's *.exe, or the GOG shortcut. You should have a folder on your Start Menu (assuming you're running Windows) called GOG.com, and all your GOG games can be launched through there.

On Windows Vista and 7 (I don't know about 8), all GOG games are automatically added to the Games folder.

I installed mine and it's in the start menu, in the folder named "GOG games". (I have windows7)

It's also in the games explorer on win7.

i would like too know if im able too put my games on usb too play them portable