Is there anything similar on BiggerPockets website that is similar to Quickbooks for accounting purposes and organizing financial transactions?

The space has definitely grown in the time I've been involved, and I've seen many people come and go. 

The property management company I work closely with has over 200 units under management and about 20% of our booking come from their direct website, which by the way is 100% organic- meaning no ads are being run to attract business. 

I've grown my portfolio significantly over the last year (almost 50 units now), and this equity seems to be the most realistic source of capital for my next acquisition. 

They just need the Articles of Organization to match the 401k, essentially saying there must be an LLC, to open the bank account.

I will use other community banks to handle the purchase of my organic investment properties with all money funneling through my USAA bank accounts to the respective community banks. 

You could also join a professional organization like ULI

As I have grown I have also purchased properties solo.

That's why some of the REI education organizations also focus on personal development. 

Most are certified by an accredited organization.