I am sorry we have to welcome you to our club
Try to prepare yourself for a long haul. The first two weeks at home are very difficult, just because they are so labor intensive. You have to help them up and down, support their weight when outside, deal with pain, etc, etc. I wasn't prepared for the fact that they won't eat for a long time afterwards and it was so frustrating trying to find something Seamus would eat. (He's the one dog here who didn't like Satin balls.) Seamus peed on himself a couple of times and it was difficult cleaning him since he couldn't stand, etc.
BUT on the brightside....they do improve and it does get easier...just hang in there. And when you get frustrated come back here and post....all who have been through this are such a tremendous support. When I was ready to cry, they were here for encouragement. I must have driven noblenewf nuts with my millions of pm's, but she always responded and was a tremendous help. I seriously don't know how people get by without NewfNet!
Best wishes coming your way from here. Hang in there and it will be ok.