Really... this whole working out thing?

So I just came from my second work out. 2.5 miles in just over 40 minutes. A full episode of Wonderfalls kept me going the whole time. As I walked really fast it occurred to me that there must be more to this than what I was currently doing. I know people use weights but I don’t know where the weight section is. There seems to be a lot of basketball and racquet ball, but I don’t if you can just use the courts or if you sign up or where you would sign up. Do you bring your own basketball, I’m finding it very complicated and I still can’t find the room that has the gravity class. I also noticed everyone was a lot more sweaty than me. I was in the target heart rate for cardio but that’s over the target heart rate for low intensity fat burn. I really don’t know what that means. And I’m in a horrible mood right now. There was little parking issue when I first got there, which didn’t so much bother me while working out – thanks to the video distraction, but it did during my post workout stretch, and I’m sure I need to do more than touch my toes, I think I have a book on stretching I need to pull out, and now I’m just in bad mood. I don’t think walking for 40 minutes three times a week is going to make me lose ten pounds. I can’t believe I been suckered into the whole gym mentality. This sucks. Whenever I did the hot yoga I always left in a great mood. All sweaty and toned feeling. Granted I didn’t get to watch my show but it was good me time. Wow even two episodes of Gilmore Girls isn’t cheering me up and I can’t eat pizza because I just worked out. Ew I’m one of those girls. People I know you all work out, you tell me you do, how do you deal?