I'm not sure what you mean by "events".
But yes, you can see the incoming requests in the log, in the browser you can see the incoming requests and the replies.
From the server side, if you turn on NetShowSend=>1 in the project settings you'll see all the output from the server (going to the browser) in Debugview.
yu can add your own debugview statements in the code by calling;
p_web._trace('whatever')
The book has chapters on the overall flow and architechure.
And of course you can just read the browse, and form code to see where the code goes.
Cheers
Bruce