This ep pretty much shows what happens after the family gets the good news. Walt and Skylar throw a party to thank everybody for their support, Walt ends up drinking one too many shots and gets into an argument with Hank when he tries to stop him from drinking more, and Walt also gives Walt Jr some shots, which also makes Hank unhappy.
Walt is on leave during this ep and starts finding some work to do on the house, changing the hot water cylinder and floor boards.
Jesse and Jane have a small hiccup in their relationship when Jane keeps Jesse a secret from her Dad, but it seems Jesse forgives her in the end.
And the best bit was Walt's line at the end, while at the hardware store he spots a rookie drug cook buying the obvious ingredients, when he sees the guy outside by his van he says this "Stay out of my territory" and the guy gets in his van and leaves.