how to start a small business

I started a small business 6 months ago that has been very successful. I have a business bank account, but have not done anything else to establish credit for the business.

I would like to lease a vehicle in the name of my small business and am curious if my business credit score would be too low?

Does anyone know a general guideline on how quickly a line of credit is established for a small business?

I tried Vista print and i didn’t see anything where i could print them,the only thing there was to order free ones and pay the shipping.I want to print them right here.

I can start a business right now that will make me 70-100k a year and i want to know how long do i have to operate my business for before i can qualify for a mortgage? Will have to wait for a year in order to use my tax return as proof of income? Please anything on the subject will help. Thanks so much.