When someone has a strategy and knows how to play, they don't need these "tricks."
As for buying heroes, I agree with the posts about level 1. Level 1 heroes are visible, so you just need to take the time to look in the tavern on day 1, in case you want to buy someone during the week.
Added 2 minutes later
YES, I completely forgot. I'm ready to join the tournament! Write to me as number 20.
-- Julius Caesar, 47 BC