Keeping track of expenses as a new business

[Dan Graney]

I know that I want to move forward and become a real estate investor. I am buying some books, accounting software and incurring some legitimate business expenses like mileage as I look at potential properties.

What is a good way to have these expenses fall under a business entity? Do I start with just a sole proprietorship so the expenses are tied to a company, or can I just record them as business expenses on my personal taxes and form some kind of business entity later?

Thank you in advance for your advice.