Hi,
You'll need to bottle feed twice a day. We feed ours for around two months or until they are eating about 2 lbs of calf starter per day. We also give free choice hay after they are 2-3 weeks old. Don't try to save money on milk replacer, the good stuff is higher, but it'll save on all manner of problems. You'll want something that's whey (milk) based, not soy, 20% protien and 20% fat are minimums. We've used Merrick's Gold Star, MFA (don't remember the name) and Nutrena Dairyway with good results. Land O Lakes and Purina are supposed to make some good ones as well, but I've not used them.
Be careful where you buy your calves, especially the first ones if your new. The price you pay from a local rancher will be worth it knowing it's had it's colustrum and is healthy and ready to go. Sale barn calves are inviting trouble for even expierenced people at times. You often have no idea where they came from and how they were cared for. Keep your calf pens as clean as possible. Do your homework, prepare your facility and get the meds and supplies you think you might need in advance before you bring home your stock. You'll be glad you did. Good luck, they are alot of work and alot of fun too.
Bryan