Wracking the brain with a classic

Having recently brought myself a brand new gaming laptop, I thought it would be a good idea to start off playing a game on both my desktop and the laptop. I am going to try keep two games in progress at any one time. This should increase the amount of content I can post on here since I can now play while I am not at home. So, with that, the first game that I intend to play on the go, will be Portal #1. I have actually played this game for a few hours previously but never got round to finishing it. I will be starting a brand new save on it, just so I am  up to speed with story/controls ect.