The retirement/financial independence equation he uses is a paid off primary home, 500k in liquid assets (usually retirement, cash, and after tax brokerage account), and more than 1 source of income (part time job, real estate, social security for those of that age, dividends, etc.).

It was an 8 unit building and it was a total disaster for all of the other tenants loud music, crack, heroin, property damage mad orgies etc...Evictions of this kind take forever and the local PD wasn't much help so we had to hire off duty police officers to work 3rd shift security till we got her out of there.  

You can use an amortization table to figure out about how much is left on the original loan based on how long the DOT has secured the property.     

I recently found these websites when looking through tax assessor's web page.

Most 100% lenders will lend at 100% UP TO 70% ARV, which is tough to secure.

Any advice on how I go about securing financing for less than $100k?

You typically don't want to do any renovations before the 2 years is up...just basic safety and securing the property.#4. 

She only received social security income, no other income.1.

For investment properties you should be using private/hard money lenders, but if it's a primary or you have a long window of time to secure the financing then traditional may be the way.Overall, it should be easier to get approved via creative financing though as there are options and workarounds for nearly every scenario (they just may cost more the more creative you need to get).

I'm even hesitant to give you the web address I'm about to give you, because if you haven't looked for it and found it already before coming to the Bigger Pockets forums to ask strangers for help, you're way, way behind the eight ball.