Would you rather set it and forget it and not need to refi again or rather take advantage of low/no closing costs on this loan and plan to be more aggressive on your rate at the time of your refi?

Don't let the idea of a low interest rate trap you from upgrading to size/scale.

This would allow you to sell a property you had purchased with the intent of holding for productive investment use. 

Ebooks, podcasts like @Bonnie Low suggested and start running numbers on every deal you see until you know how it all works.

Unlike banks, which offer limited loan options, brokers have access to a wide network of lenders, including niche and non-traditional financing sources.Here’s what they do:Assess your financial situation to determine your borrowing power.Compare multiple loan products to find the most favorable terms.Negotiate rates and terms with lenders on your behalf.Guide you through the application process, ensuring you meet all requirements.Example: Suppose you have a lower credit score or unconventional income sources.

Outside of that, do normal due diligence like appraisal and inspection and you're risk exposure is fairly low.

I want to obtain more properties through other loan products but unsure where to start.

It's no different than their 2-year, low interest rate teaser houses.

Depending on the loan product, you may be able to exclude business debt once the business has paid the debt directly for 12 months.The income and losses related to the operation of the entity will affect the income side of your DTI (like Jay explained) if you own 25% or more of the entity.

Great tools that get updated regularly.I am on the lending side of things and would be happy to hop on a call with you anytime to discuss financial strategies and help answer any questions you may have about nearly any loan product available to help you on your journey, even if they are not products my capital partners offer.We are all here to help you learn and grow.