Companies to lease trucks, which trucks and good starting amount

I’m in the stages of researching and gathering as much info as I can before investing money into starting a trucking biz. I have 40k to use to start the biz and so far have a trusted relative who has been driving, who can be a driver for me. However, I’ve been calling around to get lease quotes for trucks but so far several say I need 1 year operation in biz first, in addition to liquidable assets requirements which isn’t a problem.
Does anyone know of trusted companies who lease to new trucking companies. I’ve recently established my biz credit, have a great personal credit and the capital but lack the actual experience of operation. Also, where do you recommend I start educating myself on deciding on which trucks best suit my business? Lastly, should I find a trucking company to shadow for the dispatching aspect of the business for experience? Any good pointers? Please be kind, I’m new