Glad you got in, but breaking in through doors generally will require no more than a crow bar. I can describe the way to do so, but don't think it's good practice to educate anyone on this. Suffice to say to properly secure the door you should get a pry guard put on and put in multiple locks with the longest dead bolts possible and space this out so that the locks are not at the same locations since the middle of the door frame will flex the most.