Fixing the bathroom door

So today's project is fixing the bathroom door, the landlady does nothing to repair this house and charges way to much for it, but the bathroom door is driving us all crazy, so fix it I must.
I am basically just replacing it with another door from the sun room, which is a laughable term since the lights in there do not work, my main problem is I do not have any tools to do the job anymore but I am figuring it out.