I need cycling advice.

[foreveringlass]

I am new to this addiction, and need some help. Everywhere I have read says when cycling a new tank it takes up to 6 weeks. While waiting, test and watch for ammonia and Nitrite levels rise and fall, then watch for the nitrates to do the same. I started doing this and today, discovered my levels are back down to 0ppm on the ammonia and nitrite and my nitrates are dropping and below 5ppm now.
When is it safe to add fish? It seems way too early and the last thing I want to do is rush it!