If you do not know where a debtor banks, finding their bank account is sometimes difficult. Of course if the debtor has almost no money in their account, a levy is a waste of time and money.

In the past your only way to run a background check was to use a Private Investigator or use a detective agency. It was high-priced, took a lot of time and didn't always turn up reliable details.
Once upon a time the only way you could run a background check was by going through a detective agency or by hiring an investigator. This method wasn't always reliable, cost a lot, and took a long time.
As a private detective, you can help people catch cheating partners. There is no doubt cheating is a problem in modern society. This is being aided by the internet. It is all too easy to meet people online these days. Add this to the traditional ways of cheating and you can begin to see why cheating is on the rise in modern society.
I would suggest taking a private investigator Canada course in person just because its a job that you won't be doing from the internet. You want the hands on experience in the classroom from a top school. Do some research on Google, or even CareerBuilder and see what kinds of jobs are open currently in the market. Pretend like you are applying for one and see what they are asking for.
Hiring a Private Detective is hiring a trained professional, so it's not cheap, starting at maybe $100/hr with a retainer. It can go up from there - count on about $200/hr + retainer, and then add up how long (how many hours) you think it will take.
First off, you'll need to choose the right caliber. Note that smaller calibers generally result in higher bullet velocity. They also have reduced recoil which allows for faster follow-up shots. Large calibers feature slower bullets with increased diameter. You'll need to choose the caliber which you are most comfortable with. Second, select the proper frame size. For home defense, you'll need one with a larger frame. The longer slide will aid accuracy, although a mid-sized frame is also okay. The third and last consideration is the manufacturer. Do not randomly buy from gun shops. Make sure you purchase from a licensed manufacturer to ensure the quality of your firearm.