I also download the ebook but have not yet read it.

I'm considering writing an ebook on what to look for when considering out of state turnkey investments.  

Somewhere on BP is a e book about becoming a millionaire in 7 years.

If I was coaching my younger self, this is what I would recommend: Read Brandon Turner's book on Rental Property Investing https://www.amazon.com/Book-Rental-Property-Investing-Passive-ebook/dp/B018UTI2DOListening to the BP Real Estate podcast https://www.biggerpockets.com/podcastListening to the BP money podcast https://www.biggerpockets.com/moneyshowAttend your local REIA meetings to networkStart analyzing deals to get practiceEngage more on the BP forumsPost a profile pic ;)All the best!

Why do investors start putting out courses/e-books/cd's/software etc?

Your experience combined with what Bigger Pockets has to offer such as: word alerts feature, forums, blogs, ebooks, webinars, podcasts, informative people in many fields of real estate, colleagues, and more. 

Bigger Pockets has various resources: ebooks, blogs, forums, podcasts, webinars, colleagues, informative people in many fields of real estate, and more.Consider spending 30 minutes for 30 consecutive days on Bigger Pockets.

We are a warm hearted paying it forward group of people interested in real estate investing.Bigger Pockets has various resources: ebooks, blogs, forums, podcasts, webinars colleagues, keyword alerts, an awards system, a learn section, informative people in many fields of real estate, and more.We are considered to be the average of the 5 people we spend the most time with so connect with REIA meetings, accountability partners, and mastermind groups to engage with individuals interested in real estate investing.At the bottom of this page is a list with help in it.

Authority and as part of their package they included a complimentary consultation/overview of tax requirements to be aware of, especially geared at newbies like ourselves.

Yes Bigger Pockets has been HUUUGE in my life but honestly what got me started was a little e-book I came across called 7 years to 7 figures, or something like that, which led me here to BP and to buying our first tri-plex.