I Hope by now You would've gotten the bolt out and did Your oil and fluid changes. Its usually rough and tough for us rookies/beginners in the beginning, 'cos when going get tough the tough gets going, and We keep learning/expanding our automotive knowledgebase. But let Me get to what I want to say, whenever You have a problem of stuck bolts\nuts, just go get You some WD40 Or Cheaper & Yet effective alternative "Blaster" All Purpose Lubricant from Home depot for $1.99 & while You're there pick up a Propane torch Kit (The one with auto-lite head - it's better than the ones you gotta lite + it's awesome!) $24.97, You'll love it, get an extinguisher like the other person said just in-case as an added safety precaution (that's if you don't know what you're doing or haven't used one of them propane torches before) but you'll most likely not have any issues long as you focus on metal parts. Spray lots of the Lube, "Let it soak in" then Torch it, let it cool (it's flammable), spray some more lube, lightly tap it with a hammer, torch it again, let it cool, then break loose with a breaker bar, You'll see it come off easy like magic, that's what I did and always do with stubborn bolts/nuts.
Sorry for the long essay. But good to see a woman who works on their on car. Doing Your own work? That's the best mechanic you can ever hire.