Your skin will change a lot in the first month or so. The Accutane doesn't clear your face right away. Mine took about a month ~ month and a half to clear up completely, and I mean red spots and all (at least in my case). You just have to let it do its thing.
My scalp got really itchy and dry, and my face dried up and I could see all the little plugs coming out of my pores. Your skin will become more and more sensitive. I am more prone to cuts and bruises, and existing cuts and bruises take a long time to heal. You have to keep your skin and lips moisturized ALL the time... you will dry out fast like a snail in a salt factory lol. I'm on my last month or so of Accutane and I can't wait to get off this stuff. At the same time I really can't imagine ever not taking this medication, it changed my life (for the better).
Best of luck guys!