Nutrition is the main focus at this point in time. With our conures the male is doing the eating for both of them. On average the female leaves the nest for about 50 seconds per day (I know this because I have a Webcam on them 24/7). She leaves the nest mainly for a stretch and to do her droppings outside. During egg laying, the female will also have a bath before laying eggs. Initially this helps with passing the eggs. She also has a quick bath if she needs to raise the humidity of the nest box, by bringing the moisture into the nest. If the nest gets too dry the chicks won't be able to break the egg shell.
Note the above is in reference to Conures.
So in short our conures require good Nutrition and an area where they can bath.
I would also suggest reading and finding out as much information as possible. Before our conures bred, I purchased 5 books specifically on Conures and one of which was only on breeding. You need to be very careful about the information people give. I would also suggest talking to breeders and vets.
We also had an incubator on hand if she didn't stay on the eggs or wasn't careful with the eggs. We didn't need to use it. We've now set up a brooder and the plan is to pull the babies at 3 weeks. You will also need Hand Rearing formula on hand just in case. This also means you will need to know how to mix it and correct temperature, feeding etc. There is far too much to cover here.
Good luck with it. Its a lot of work for human and birds, but you will learn a lot!
BTW: Eggs are due to hatch in the anytime now

Cheers
Paul