I was just wondering. I am putting my experience time in & have completed a hotel management coarse. I would love any advice on how to snag a job & other helpful info- common mistakes, managing employees anything else anyone has learned that made them say "wish I would have figured this out sooner"

I am learning alot by watching & listening, but mainly just what not to do's. It is hard to find someone who is a good example of what a manager should be. I plan to approach the owner where I work & let him know that I am interested in management &/or more training incase...I do think a position may be coming up soon & have expressed to the manager that I'm interested but it would be replacing her so I dont think she is relaying the message to the owner. I hate to go around her but if it does come available someone is going to get it, why not me-right? I would also love any advice from front desk or housekeeping present/past experience on why you left, what could have made you stay. Anything. I'm a sponge , I decided this what I'm going to do & want all the knowledge I can get. Thanks.