Dana,
First, let me welcome you! I started out like you adding frogs to a tank that hadn't cycled and I have received the best information from the people on this site.
So about the ammonia/cycling, I would recommend a 50% water change (WC) today and then do water changes once a week (or more dependent on testing.) If your ammonia is off the chart and you do a WC of 25%---you only removed 3G of the toxic water. I would do a 50% today, just to get the majority of the ammonia out. What type of tests are you using? Most people here love the
API Master Test kit and with good reason---they are very dependable and test for most of your major concerns: ammonia, nitrates, nitrites,
pH. I would also recommend you keep a log of your test results, so you can see where you are and if need be, post them when you have a question.
Last but not least, be patient. Since you are cycling with fish and having to do water changes, cycling will take longer, but it will certainly be worth it once you have cycled and your fish and tank are "healthy".
I 'm sure you will get plenty of helpful responses, but I thought I would get the ball rolling......
Wish you lots of luck!
-M