I would recommend a minimum of 1-3 years as a company driver. During that time your company is paying you to learn the business and you can start seriously researching the business of owning a truck. Jeffrey Like is “The Godfather” of learning to be an Owner-Operator. He has a ton of very informative YouTube videos. Also read the many helpful articles at OOIDA.com. The Owner Operator Independent Drivers Association is very helpful. They will even review lease contracts with trucking companies IF you decide to lease a truck rather than finance it conventionally. My recommendation is DO NOT LEASE A TRUCK FROM A TRUCKING COMPANY. The vast majority of those leases are very expensive and the rules are heavily stacked in favor of the trucking company.