What is investment banking??

<p>Hi,
This is coming from an engineer who is thinking of switching to business and is interested in investment banking but has no clue what it is....How do u become one? Is it very competitive? ....Do all ibankers make tons of money or is it just the top ones...Also hows the daily life of an investment banker?( especially compared to engineers)
Thanks
PS: any internet links would be helpful too especially if u dont feel like typing</p>

<p>just****inggoogleit.com</p>