He is too young for the crate for potty training.
What a crate does is work with the dogs natural instincts which is basically "You don't go poo and pee where you live" if their living space is the crate then they naturally will avoid going in it. HOWEVER, the puppy at 8 weeks can't control very long. Roughly going the bathroom 6 or 8 times a day should be expected. You can actually make crating less effective down the line if they get use to going in the crate as a puppy.
Ideally- the breeder would have started potty training. You will want to get the dog use to going where you intend him/her to go normally right away. If that is walks- then take him/her for frequent walks. If that is the backyard, then let them out there frequently, etc. Praise them with love (occasional treat if you wish) when they go where you want them. Don't worry about scolding them if they go in the house (and EXPECT that they will- plan accordingly. Natures Miracle will be your friend). Think of it this way- who would get mad at a baby for going poo or pee in their diapers? No one that deserves to be around a baby- that is for sure.
You really want to arrange for someone to help you while you are at work. There are dog walking services of course if you have no one else available- failing that there is doggy daycare that you could get him into for at least a couple of months. But it will be at least a month before they will have any chance of holding it for long than 1-2 hours.
Don't go cheap on the food. Get then on a high quality food (there is a whole thread about dog food in here). Don't over do the treats. No rawhide (at least for a while).
I would take them in to a vet and figure out if you like the vet etc. Just like a doc, you have your choices. But they will walk you through the suggested checkups, shots etc. Also, with bulldogs there are a number of special health issues you will want to get good professional advise on. I use Banfield because they are large and have a decent monthly plan you can buy into. I also would suggest looking at insurance, though certainly optional. I have Trupanion which was far superior to anything else back when I did all my research in terms of coverage and cost. My thinking was that I didn't want to have to be in a situation where I put my dog down because I could not afford medical care for him. He has had a number of small issues since we got it and I have got a significant amount of my investment back through it- always great customer service and prompt paying on claims.
Get a good nice pet shampoo for the little guy. Don't go crazy giving him baths every day but I know of several bulldogs that have skin issues so being proactive will benefit you. Weekly baths with a good none harsh shampoo should be a good target. Again, I wouldn't try to go to the cheap route with that.
Take him to puppy playtime and then later basic training. I think both Petsmart and Petco offer these as well as you could find local dog daycare/training places may as well. You want that for him to get socialized with other dogs and you want to do training with him pretty much right away.
Pretty much all I can think of off the top of my head right now. Good luck!