If your gravel and filter foam has dried out, you no longer have live nitrifyng bacteria. Sorry.
But your Dad has bacteria in his tank, whether he knows it or thinks he doesn't. Grab an ounce or two of his substrate or a small piece of his filter foam and put it in or near your filter. This will transfer some of his live bacteria to your tank and help your cycle get started. Caution: Only do this if his tank and his livestock are healthy.
Until you get your test kit, I think you should do at least two 50% water changes per week with Prime water conditioner @2-drops/gal. And add Prime every other day.
When you get your test kit keep your ammonia and nitrite below 0.50ppm by doing 50% water changes (with Prime). In other words, change 50% of your water whenever ammonia or nitrite rise above 0.50ppm. That will be your water change schedule. After your ammonia and nitrite decline to 0.0ppm, change 50% weekly for the life of the tank (with Prime).
Even though I wouldn't recommend fish-in cycling without a test kit, here's a more detailed explanation which should answer some questions: http://www.tropicalfishkeeping.com/b...ecific-107771/