More scoring

Another question - in the top users box on the home page, I'm listed @ #59. On the stats page, it shows 16,746 users. Does this mean I am #68 out of 16,746 users?

yes - most users only enter one bill and thats it. so.. yes, what you state is true. You are doing great. Soon, you will be on page 2 if you keep marking and entering.

When might my status change from a Jr. User? How many other levels are there & what are they? Also, when can I expect my entry limit to change?

the best way to find the answers is to look in the help section if that doesn't help email dr. I say this because it is thr only way you will probably find all the right answers.