We would like to have a web site that has the ability to accept rent payment; however, we are not willing to pay the 2.9% Paypal and others charge.  

crowdfunding websites are of concern for me... i guess i don't understand them well. here is the quote from one of the web smarts:"Here is the problem with crowdfunding and Joe can probably better elaborate from his experience: I recently had an entitlement-add deal fall into my lap.

Per the City web siteAccessory Dwelling Unit (ADU) - Separate residence built within or detached from the main home, designed or configured to be used as a separate dwelling unit and has been established by permit.

Be patient and consistent, be aware and brave.  

I notice now they also do monthly rentals on their web sites (intended to rent for 2-3 months)... which would be ideal for me.

Typically a landing page or web form asking the subscriber to commit to the next level. 

I am also interested in groups that can not be tied to a single location but may meet via a web based medium at a regular frequency. 

You can get on the Secretary of States web page and it lays it all out for you.

Also, I searched in the web and found that the book, Building Wealth One House at a Time by John Schaub, is a must-read book for real estate beginners.

It des not take too much money and teaches around all (just about) niches but you have to be kind of brave and be a little bit selective on what you tell the homeowner.