Yikes, that's as bad a first outing as you can get. Onwards and upwards mattabaum!

As for the blade, perhaps post a picture so we can see what the nick is all about? I think most of us would suggest holding off shaving with it until it's properly repaired - nothing like a nick in a blade to ruin your face! If there's a visible nick, you can bet the edge will need a good honing to get it properly shave ready again. It will be worth it - persistence and patience are my words of advice.