Definitely a holland lop. Not only in the head but black tort is one of the most common colors that hollands come in. first thing is to start practing posing your rabbit properly. this must be done before even considering breeding. there are many helpful websites lime this one:
http://oakridgerabbitry.weebly.com/holland-lop-type.html to help you learn. There are also some videos I've watched on YouTube that do good at explaining. Once you've got posing down you can take pictures of your bunny and post them on here. There are a few holland breeders that would be able to critique your bunny for the strong and weak points. You must breed animals with complimenting type in order to get a good show bunny.
As far as 4h you can get a hold of your local Agriculture extension office and they can let you know of the closest chapter. Find out when the next meeting is and go to it. There you will be able to talk to the advisor and ask about showing rabbits for 4h.
For your other questions idk specifically what you will need for the show but the rabbit does need a tattoo in the left ear in order to be shown. They do not need to have papers in order for them to be shown but they are really helpful to make sure your rabbit is purebred and also tells you the lineage so you can make pedigrees for any babies that rabbit has. Many show breeders don't like not having pedigrees on rabbits. All rabbits are show in specific groups by age and weight.
What do you mean you need info for when they are born? I highly do not recommend breeding your rabbit until you have properly evaluated its type
