I would first read up on the cycle, as a few of the links here show. That will give you a better idea of where you are in your cycle and how long it will take to finish (but you'll need a test kit, i would recommend
API master test kit, to tell you where your levels are).
Cloudiness is probably a bacterial bloom, and there are plenty of products for that but I would start with a water change to see if that helps before you start pouring medications in.
This could be somewhere else, but do you have a filter for your tank? You need a filter in order for it to cycle.
Also, I would buy at least a few medications. I know of too many people who have had their fish get sick and been without any kind of medications and not able to find them at the last minute. My recommendation would be medications for fungus, parasites, and
ICH.