I keep my fry in a Petsmart 10 gallon set up. It works good for growing out the first few weeks and is usually on sale for around $20. I am going to have to get a second one soon. You will need to add a heater.
I start with making sure my egg tumbler is ready just in case the fry aren't free swimming yet. If they are still in the egg stage, they go in the tumbler. If they are fry with egg sac still attached, I put them in a breeder net inside the 10g (so that the netting buffers the filtration flow). If they are healthy, free swimming fry, they go right in the tank. I usually try to strip at the 1 to 2 week mark. The holding fish isn't eating and the sooner you can get the fry stripped, the sooner she starts eating again. You can isolate the fish of course and let her release naturally...but, you might have problems introducing her back into the main tank. Stripping seems to be a good alternative for many reasons.
I start with a plastic bucket about half full of tank water. I catch the fish and put her in it. I have never had one release at this time, but stress can cause a lot of problems of course and she may spit them out, but doubtful. I get two oral syringes ready (usually, one will do, but I have a second ready just in case). The style I use is like this:
Once ready, I make sure my hands are wet from tank water and I carefully pick her up in my palm. I hold her so that when I am making a fist, her belly is against my fingertips, her dorsal fin is against my palm and her head/face is sticking out between my thumb and index finger. Of course, handle her carefully.
Facing her at a slight downward angle, face first towards the water, I use the syringe tip to carefully pry her lower jaw open. It's actually a lot easier than it may seem. Once open, I give the syringe a steady, slow squeeze. You have to keep the syringe off to the side to allow room for the fry/eggs to pass. You may have to do this a few times to insure all the fry are out. Every so often, dip the fish and your hand back in the water to keep her wet. The whole process should take less than a couple of minutes tops.
Be prepared, the sight of a bunch of dark, squiggly things pouring out of your fish's mouth can catch you off guard the first time or two. Once it's over, I put the female back in her tank first, then take care of the fry.
Again, it's a lot easier than it may seem at first. The main thing is to work carefully and to have everything ready prior.
If you have more questions, feel free to ask.