Hi Ally
As Sarah has said you can qualify for Crufts at Champ Shows by gaining either a 1st, 2nd or 3rd in the following classes - Minor Puppy, Puppy, Junior, Special Yearling, Post Graduate, Limit and Open. Also by gaining a 1st, 2nd or 3rd in Limit or Open you gain your Stud Book no and the dog qualifies for Crufts for life
With Open Shows (or the ones here in Guernsey) you have to win Best Puppy in Show, or Best or Reserve Best in Show to qualify for Crufts !!
If you just want to have a go and see how you get on I would suggest going to an Open Show - the classes should be smaller and it will be more relaxed. The Champ Shows are huge with big entries and can be very daunting to a newbie
HTH
Dessie