Hi there!
I wouldn't say that I've progressed to expert level yet but I have kept darts successfully for about a year. You might want to check out some of the excellent sites on dart frog husbandry such as www.doylesdartden.com. Sean Stewart (www.herpetologic.net) and Patrick Nabors (www.saurian.net) also have frog care sheets on their sites. You might want to look at those as well.
I think perhaps the most distinguishing characteristic of dart frog care is providing a continuous food supply. For most, this means making up fruitfly cultures weekly or every other week. If this is totally ok with you then I think that's a good start.
A lot of people who are dart frog beginners start off here so there are many posts like yours. You might want to check some of them out. Or you can always email me. My email address is ksh6@cornell.edu
Later,
Ken