I am struggling to understand how depreciation and taxable rental income should be calculated in the spreadsheet.As I currently understand it: Depreciation of property value (not land) can help reduce taxes on rental income.

What they fail to understand is that equity, due to it's opportunity value, actually reduces cash flow more than having 100% financing.For appreciation investors it is more of a game since they have already made their money.

End result negative 5% return.For this reason it is understood that equity reduces cash flow on a property it does not increase it. 

Very sad to hear all that equity is lying dead in your property likely reducing your cash flow to zero or less.

Tracking all income and expenses on everything you are responsible for and review them regularly so you can hopefully reduce expenses and increase income.By the way, I'm now 60 years old and quite opinionated.  

Also, it reduces the chance anyone will claim you stole something.

Basically if I just drove my list 1-30 it might be 14 hours and 290 miles, but if the software optimizes it so I take the most efficient route it can be reduced to 4 hours and say 100 miles but still hitting all 30 stops.As for the paying in Euros, the cost on the routeXL site is in Euros, not dollars, so I quoted the Euro price.

Having roommates or tenants nearby would cause me anxiety.

I am currently employed as a senior sales engineer, and my job is to program and sell capital equipment within the industrial automation and manufacturing sector (I figure out ways to reduce labor costs in factories by replacing people with machines.

Figure out what all of that would cost, and ask the seller to reduce the sale price by that much.