Supposedly it's best to send a postcard first because it's the cheapest and you'll get the non deliverables back returned to you so that you can further scrub your list or skip trace those returned cards and find the real addresses of the owners.

A few recommendations:- "E-Myth Revisited" by Michael Gerber (this will have you working on your business instead of in your business)- "Rich Dad, Poor Dad" by Robert Kiyosaki and Sharon Lechter (this provides a more foundational perspective on money)- "Cashflow Quadrant" by Robert Kiyosaki (further builds on the "Rich Dad, Poor Dad" foundation)- "Set for Life" by Scott Trench- "Long-Distance Real Estate Investing" by David Greene- "The Book on Managing Rental Properties' by Brandon Turner and Heather Turner- "The Miracle Morning" by Hal Elrod-"HOLD" by Gary Keller (geared toward SFR)-"The ABCs of Real Estate Investing" by Ken McElroy (geared toward commercial investing)"Multi-Family Millions" by David Lyndahl (This is on my list of "To-Reads".

If the house has sat on the market for more than a few days I would question what factors are scaring off other investors (bad area, foundation problems, extremely high repair costs, etc).

I know the place needs rewired, new plumbing, it has a cracked foundation etc. 

Check on the foundation, roof, plumbing, and electrical.

I hired a foundation contractor, framer and now my best friend who is a flipper has a team & is helping me finish up the rest. 

My main concern is with the foundation.

How to manage dealsOnce you have a basic foundation of knowledge, then you can come to forums like this and start asking more specific questions or reading up on particular topics to fill in the gaps.

Here some interesting info and numbers about the project.Acquired: Feb 2018Rehab - 2 - 3 months.Listed - May 2018Sold - Sep 2018Purchased - $115,000Financed - $110kRehab - $63k (investor contributoin.Sale Price: $224,900 with seller contribution $6kAfter all expenses Final Profit - $21k  - 33% Highlights - Removed big pool and created big back yard, did major foundation repair to get to tolerance level, removed walls to make the kitchen open, all new flooring, new roof, new appliances and whole shebang. 

I've got my first property under contract and had it inspected a few days ago. i've looked over the inspection report and the major issues i see are related to foundation problems.