It's basic addition/subtraction, with the exception of how to amortize a loan to find the loan amount, but you can look that up online.For reading I'd suggest some or all of the following:-Rich Dad Poor Dad (Not really a -Cash Flow Forever-The Millionaire Real Estate Investor-The 4 hour work week

Then by the time you're 28 you will be financially free and have a substantial passive income so you can pursue any passion you want [see The 4 Hour Work Week].Don't wait until after 30+ years of working to decide to get in to REI like I did.Start tomorrow!

When I am at home I work 60+ hour work weeks.

Now back to my books - switching between 4 Hour Work Week and The Book on Flipping Houses by J Scott :)

That means we’ll have effectively been absent two and half work weeks– yet our monthly income won’t miss a beat.Can your pay check do that?

Sorry to show up late to my own party crazy work week. 

If you shop for houses on the weekend be prepared to double your drive time during the work week. 

Or maybe you can get your employer to let you work part time or from home (Read The 4 Hr Work Week by Tim Ferris for some ideas!)

Young ambitious and used to putting 60+ hr work weeks.

I have definitely put in 70-80 hour work weeks.