I recommend "Secrets of the Millionaire Mind by T Harv Eker" & "The Compound Effect by Darren Hardy" for those starting out.- Have integrity.

On a shared wall, I have added a second layer of 5/8" quiet rock drywall to the existing drywall, along with Greenglue soundproofing compound in between the two sheets. 

And its cheaper.It can be patched with many products, including most self-leveling compounds.

After I got it up higher I could tear out all of the rotten floor joists that were making it bow in the middle.

There are some other ones depending on how often the loan is compounded but this seems to be pretty standard:  PS I just found this on google at some point...The following formula is used to calculate the fixed monthly payment (P) required to fully amortize a loan of L dollars over a term of n months at a monthly interest rate of c.

*said with a bow of praise*

Beyond the content itself, and reviews for a business, there really isn't just ONE big thing when it comes to SEO... there are lots of little things that compound which results in you ranking.One last thing I'll mention about content since it's so important... 

I just read The Compound Effect and it's amazing what just 10 hours a week can do over 1, 2, 3+ years.I have a pretty extensive background in property management and REI and I'm just up the road from you in Lincoln Square so if you ever need anything, just let me know!

A little each day compounds over months and years and will snowball to success.

You could sell the property and use take the proceeds flip more properties to invest in larger long term deals or just keep compounding the cash until you're ready to retire and then buy larger deals or invest in others deals.