Many people who go into business decide to do so with a company.
Companies are a popular trading entity - ahead of other options such as partnerships or trading in your own name. What can make them appealing is the fact they're a separate entity to the shareholders and directors of the business.
This can be useful should things go wrong. Generally the limited liability of a company means the risk or exposure is contained to the company entity.
There are some exceptions and if you are thinking your limited liability company means you're off the hook for anything negative that happens to your business, think again.
You have personally guaranteed debt. Signing an agreement for credit to trade are common these days and often include a guarantee that says if your company can't pay the debt then you will take care of it personally.