i find them very easy to understand ... the "entrants" are the total number of players, and right under that it shows the total number of players remaining.
Also, if you look to the upper right of the tournament screen, it will either say "Late Reg" and then (2 levels remaining) or (1 level remaining), etc... and this tells
you how much longer you have before the registration is closed. If it says "Running" instead of "Late Reg", then the Late registration period is over.
The middle of the tournament lobby also shows how much the current blinds are ... and under that, it shows how much the next level of blinds will be and how much time is remaining before they change.
as with most sites, there is a learning curve ... but keep looking and im sure you will see what m talking about.
i hope this helps. and good luck in the tournaments !!