Puppies generally transition really well to raw.
Firstly, you don't have to feed whole prey items. It is the most natural way to feed but most pet owners find it difficult, so we compromise by feeding the same proportions of meat/bone/organs that you would find in a prey animal. (Some people call this way of feeding the 'Frankenprey' diet.)
So aim to feed around 80% meat, 10% bone and 10% organs, half of which should be liver. Try and use as many different meats as possible, variety is good.
The items a puppy might struggle with are the bones, so I would feed some mince with bone in to ensure the calcium requirement is being met. You will have to buy this from a pet shop or order online, and make sure you know the exact bone content as it important puppies don't get too much calcium.
It might be easier to start with a good pre-made raw complete diet, then you won't have to worry about getting the proportions right.
Start with a bone-in chicken mince, and some plain chicken meat if the bone content needs 'diluting'. Watch the poop, it should be formed but not hard, too hard, white, or crumbly means too much bone.
When the chicken is being tolerated well, you can add a new protein, I would go for a red meat like beef or pork, still using the chicken mince for the bone content. Add organs last as they are very rich, but they are vital, you can't skip them. Just add a bite at a time, aim for a gradual changeover.
Add bigger chunks of meat as puppy grows and learns to chew, also bones he can strip. Cornish hen or quail with the bones in are the easiest and softest bones for a puppy to actually eat. Once your pup can manage these you can stop feeding the mince.
As for handling the meat, my top tip is to wear rubber gloves. The mince will come in a block or tube, cut this into appropriate sized portions whilst frozen/semi frozen, then it is ready to just pop in a bowl and leave to defrost in the fridge. When it is time to feed, add a little hot water to take the chill off and bring it up to room temperature.
Hope this helps, please feel free to ask lots of questions, we have lots of dedicated raw feeders on this forum with a wealth of knowledge and experience they are happy to share.