Hello,I am a rookie investor looking for guidance.  

The last house I bought, was brought to me off-market by my agent, and it's seeming that off-market is the only way to get good properties without the MLS prices.I've recently got a nice business card printed up, and would like to start a direct mailer campaign, using BatchLeads to find multifamily properties in the local towns that I wish to invest in.I have a pretty strict criteria about what I'm looking to purchase at this time:-Legal 2-or-more unit large Multifamily (not required to be owner occupied)-Each unit should be at least 3 bedrooms (so if it's a duplex, it needs to be 6+ bedrooms)-Sewer (not septic)-Gas (not oil)A lot of this information is not readily available online, so once I start my mailers, I'm sure I'm going to find people who eventually respond, but that don't have criteria which match what I'm looking for.I feel like it would be a waste if I paid a bunch of money for direct mailers, and then someone reaches out to me to sell, but their house doesn't match the criteria of what I'm looking for -- I don't know anything about wholesaling.What can I do to monetize these leads, or is the answer is that I need to learn So we believe no lead is a bad lead.

So on Fridays he would take a few complaint cards that came in about the Mac and Cheese and personally call the folks of course to hear him tell it was quite humorous calling ( normally a house wife) and explain NO I am the President of STauffer and I want to hear why or how we can improve our Mac and Cheese..

Do you have credit cards with places like Lowes and Home Depot that you can use to buy materials now and not need to pay off for maybe 90 days?

And to @Jay Hinrichs's point, I see no safeguards for gators when teaching about gap funding, EMD funding, or any other tactic that they try and sell which tells you to get 0% interest credit cards and build business credit to be used to lend out.

Maintenance, the life cycle of commercial W/D, and the cost of converting from coin-op to debit card operated? 

Mainly because I am a rookie, but also because I did not know these questions to ask when starting out. 

Since then, I’ve been listening to BiggerPockets, On The Market, and Real Estate Rookie, and I’m currently reading The Multifamily Millionaire by Brandon Turner.A bit about myself:I'm a 31-year-old software engineer looking to become a long-term multifamily real estate investor (REI) and achieve FIRE (Financial Independence, Retire Early).

If you are an "authorized user" on your husband's credit card(s) you can benefit from his credit and start increasing your score.

I've seen investors use credit cards with a 0% APR promotion, business loans, but most times they have someone in their network privately lending them those funds.