There is a general care sheet on keeping dart frogs right here. Just check the care sheet section above and go to dart frogs. This is written by Patrick Nabors at Saurain.net, who also has more individualized care sheets for different species on the Saurian web site.
You will find that there isn't anything particularly mysterious or difficult about keeping them. Each different breeder also has his/her own caresheets. A nice reference is POISON FROGS, Provessional Breeders Series, by W. Schmidt and EW Henkel. I think Saurian and Black Jungle both carry this book, or you can get it from:
Zoo Book Sales
-----
Patty
Pahsimeroi, Idaho
4 D. auratus blue
5 D. galactonotus pumpkin orange splash back
5 D. imitator
6 D. leucomelas
4 D. pumilio Bastimentos
4 D. fantasticus
4 P. terribilis
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus