Obviously Intuit the manufacturer offers support but there are many blogs and videos online created by other users.

The market can operate in very strange and counter intuitive ways often.

To me living within your means is as intuitive as staying hydrated.I actually read lifeonaire and I like the term.  

@Todd MossHi Todd - hard to say exactly as I'd think this decision will largely rest on an assumption / intuitive feel for possible appreciation of the property over time. 

Also in addition to Intuit's support, there is lots of online information about how to use it. 

If something seems off, but you're not sure what, it's your intuition.

For example a lot of beginners will see a cap rate that is very high for their market and think thats a good thing while more experienced investors will consider it as a red flag or an indicator that the property is undesirable for some reason: could be it is in a bad location, is in poor condition, will have limited appreciation, etc. which might be counter-intuitive for someone solely focused on getting a certain cap rate.

Seemingly small changes like stabilized rent growth rate can make a big difference on IRR, which is already kind of a tricky metric to have an intuitive feel for.Additionally, one should in my opinion focus more on the team than the specific deal.

We use Excel to do the actual calculation because the formula is too complex to run mentally or by hand, but you can build an intuition of how it works through experimentation.

Trust your intuition.