Some RAD members offer dog agility training. Contact them to find out whether they provide the kind of training you're looking for; for example, recreational versus competition, or trainer just starting out versus trainer with many titles. Each has something to offer.
Rainshadow Agility Dogs itself does not provide agility training, and cannot endorse any particular trainer.
UKI Agility Page
AKC Agility Page
NextQ - find trials, fun matches and workshops