,Consider downloading my "2013 Housing Market Forecast" to supplement your spreadsheet.Having a higher average rent relative to the average property value is good but only one part of the bigger picture.You want to consider the health of the local economy (jobs and job growth, employment trends, migration in and out, etc.)Next you want to consider the neighborhood, and finally a close look at the property itself in terms of cash flow, cash-on-cash return, and total ROI.I bought some property in specific parts of Detroit in early 2004 when things were looking 'up' for the city.

:) It's available for download here, along with others.

He has a rehab valuator Lite that you can download as a free demo.

The benefit that this can create for you (with a couple downloads to excel) is an ongoing cash flow forecasting tool and a comparison of what you thought your cash flow should be to what it actually was.

On top of the forums, podcasts, books they even have forms and docs to download.

I see you are in CA, assuming the property you are using as security is in CA, consider a standard deed of trust which you can download from any title companies website, e.g, Lawyer's Title. 

Or you can download my estimating templates I have in my Biggerpockets fileplace:Simple Estimate SpreadsheetDetailed Estimating SpreadsheetThere are other Estimating Softwares available as well which can help you manage the Estimating process as well...#5 Practice, Practice, PracticeWalkthrough potential rehab properties (or find properties virtually online) and practice creating detailed scopes of work, quantifying repairs and estimating rehab costs for the projects.#6 Get Your First Rehab ProjectYou can practice all you want, but ultimately you will learn the most about estimating rehab costs by actually rehabbing a house.

For personal, most phones have a setting where you can block unknown callers, and there are apps you can download to help filter out spam calls.

The attached link has a downloadable PDF that shows the demo plan.

Download a certain app?