Door knocking seems to be the most common method.

I am having trouble seeing how I can do more than 1 or 2 properties before I would have to wait until I had equity in said properties before I could get loans for more.This is a common question so I gathered some uncommonly good answers and linked to them here:Most recent flip numbers compared to HGTV https://www.biggerpockets.com/forums/223/topics/343683-most-recent-flip-numbers-compared-to-hgtvHow would you describe REI to a HGTV Fanatic?

Appendix A is a statement of common charges (wall repair, damaged blinds, garbage removal, etc) that the tenant gets with the lease.

But it would be fine for you to also own a tenant in common % of the new property. 

This is common in the wholesaler offers I have seen.  

The most common portfolio style loan in Texas is a 20 year adjustable rate loan.

@S Edward  I would check your condo's declaration to see how the units are delineated as being common elements (which would be condo association property) and unit owner property.

LLC is the most common, of course, but I think any sort of formal entity will do. 

I would suggest speaking with people in your market about whats common and whats not.

You will find this trick to be common where sellers and brokers misrepresent the real expenses that will be present on a property.