One tip, weight your rabbits (with a good scale) before you do your entries. You will really just be wasting money if a rabbit is over or under weight. Many breeders do have to limit how many they can bring due to costs and space, so there is no sense to bring a rabbit that is over or under when you have others that are the right weight.
Many breeders don't really advertise on Kijiji, I only know of 1 local breeder who does ads and is part of the breeders club.
Go to a show or at least contact people through a breeders club. You will probably get more contacts that way. Shows are also good to meet breeders who are not club members.
It is probably better to start learning now about the basics of breeding as well as the standards and such rather than trying to learn it all as you go. While you will be learning as you go, having a good base when you start is important. You do save money as you don't end up buying rabbits who aren't up to the standard and waste time breeding those rabbits when you could focus on higher quality rabbits.
Starting small can also be good. Get 2-5 rabbits (depending on how you want to start) and work with them. Don't keep buying until you know what you want. If you start small, it is a bit easier if you decide you are not really into it or want to stay small. You might even want to try getting 1 rabbit and going to a show with it to see how you may do.