Thanks for that info. That helps. So I can start by farming the baby dragons and level them up? Assuming I can find some. Maybe I will try that tonight.
They'll drop from the bosses. Chances aren't that high afaik but at least its possible to get them. If you and another person whos at least rank 20 trade presents, you'll be getting 2 dragons from that as well.
How does the "Friends" work exactly does it just allow me to add them for my final spot?
Pretty much. If you have them on your friends list, the monster will be able to use its passive Leader ability but if they're not (labelled as Explorers) it won't activate.
Which means it would be best to wait and collect some more, before feeding them to the main, seeing as that is pretty expensive?
The cost is the same. The monster's level affects the cost but there's no point in holding out.