PetCloud does offer an Accredited Pet Sitting Course located here: https://www.petcloud.com.au/rspca-qld-accredited-pet-minding-course
Read the RSPCA's feeding guide.
If still confused, give them a cup of dry kibble, mixed with mince morning and evening and always make sure they have plenty of bowls of water.
The AEC also have a handy guide on the care routine for puppies: http://www.aecvets.com.au/docs/Updated%20Info%20Sheets/Hand-Rearing-Puppies-2016.pdf
Adult Dogs: Medium to Large dogs are usually walked for 30 mins to 1 hour per day. This also depends on their age and whether they suffer from any arthritis or hip ailments.