if I saved up some money, and decided to visit the USA, and decided I wanted to stay? how would I go about, staying

In the first instance you apply on line for an ESTA visa waiver to the US. This allows you entry as a tourist for up to three months. The form itself applies for two years. So you can stay three months, leave, then return several times within the two year period. Getting a work Visa, or Residence as a foreign national is a long complicated process, unless you have some high powerd sought after skill and a company will sponser you. You can speak to an immigration laywer on line from Here to learn more about those details. But its a real rats nest to navigate without professional help.