I was wondering if anyone has some advice on software that can help me organize me with my rentals.

You may need to search by the address of the buyer as they may change their name or the name of the entity on each purchase.You can also buy lists from companies like list source and subscribe to software that will show you who the cash buyers are.

I have a client who is building a mini storage complex and is looking for recommendations on property management software. 

@Brandi Scharrer, nice to meet you and fur-family and congratulations on your successful nomadic lifestyle!

I use Tellus for rent collection and I like using software to manage my properties. 

You can also buy lists from companies like list source and there are some REI software companies that have a cash buyer search feature.Best way to find motivated sellers is to purchase lists and compile lists from city and county for 60-90-120 days late on mortgage, pre-foreclosure, delinquent taxes, water cutoff, code violation, probate, divorce, high equity, etc. and mail or cold call.Other methods are driving for dollars, door knocking, wholesalers, craigslist, Realtors, FSBO sites, expired listings, foreclosure sites, put out bandit signs, billboards, newspapers, other offline publications.You can use pay per click/adwords, facebook, Linkedin, Youtube, and other forms of online and social media.

Has anyone tried the Carrot program to generate leads? Is it really worth it? Seems like they cover all the areas to search.

Hi how do I find the trusted lenders that do 109% financing for fix and flips, and no that RV is the name of one of my favorite Real Estate Investment softwares I use in my business.

https://www.biggerpockets.com/rei/online-property-management-software-cloud/In my opinion, 24 units is too many for Venmo/PayPal so I would steer clear. 

@Rich Zellmer, it might not be ideal but using one of the landlord softwares with free ACH might be your best bet if you're looking for cheap transactions.