I know Zillow and other websites have tools to give you valuations on properties, but what other tools are there? 

When it comes to negotiating with a contractor, the tool is indispensable.

All the suggestions above come with tools where i have to upload lease information, etc and keep up with it in THAT software as well as my own. 

I fixed her fence and roof for her because I felt badly about her loss (I had tools and material out there anyway to remodel my building).

These are the kinds of things that your QI should walk with you through.The construction exchange that @Clayton Mobley was talking about is a great tool if you want to either purchase a new build or build something and have not yet sold your old property. 

Landlord tenant law and fair housing is enough to get most new investors to think twice...plus unless you have access to PM tools like screening services, MLS and other rental marketing sites, vetted leases, vendors to handle repairs...you should let a professional handle it.  

The 1031 exchange is one of the most powerful tools that a real estate investor has to build substantial wealth over the long term.

@Doug Pretorius Adding tools to my toolbox.

Beginner tip:  One thing to consider, if you decide you want to DIY the repairs just to learn, you will incur a lot of expenses buying tools you need but do not own. 

Do they make a distinction between the fixtures and features of the property itself, and any tools/equipment/materials you have at the property?