Welcome to our lofts. Here at BYC. I can start to explain and be here until morning, and my fingers bleeding from typing. A simpler solution is to direct you to 2 threads that are very active and with plenty of info you can gain just by scanning the posts.
Let me tackle your initial questions,,
How to breed.
You want to breed your pair, then it is also good to breed those of-springs to another set of different source pigeons, to diversify the DNA.
Train.
Start by loft flying the young at about 4 weeks or slightly older. They will keep returning to loft because they still get fed by pappa somewhat. Try to release them hungry. They hop out and turn around and go back to loft for breakfast. This trains them to come back inside loft.
The best times to let them out and if they can be flown while nesting.
You don't release your newly acquired breeding pairs until at least you are sure they are homeset. Adult pigeons usually need to raise 3 or more broods to be comfortable staying in their new loft. Some will not homeset regardless. Your newly born pigeons in your loft will homeset to your loft.
Times to let your pigeons fly depends on a few things. Your schedule, and factors like predators present. Different for everyone. Best to let them out hungry, and call them into loft with food. Avoid flying nursing parents, for possibilities of their loss.
https://www.backyardchickens.com/threads/pigeon-talk.1276029/
https://www.backyardchickens.com/threads/pigeon-bulletin-board.1174207/
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
