Keep in mind, I would be a very conscientious neighbor and would be very careful not to be respectful to my neighbors peace and quiet and the enjoyment of their homes and property.  

If you've been able to hold a property for 20+ years, then you'll probably be okay no matter what the interest rate environment is at that point, since the property will be mostly paid down and the income will likely have grown a healthy amount.In my opinion, most everything comes down to your initial buying criteria.

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proAlerts can be really helpful too: http://www.biggerpockets.com/alertsThere are a few self-contained guides that you can access here: https://www.biggerpockets.com/guides

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.

Tenants just want to know you aren’t going to kick them out.Be sure when showing to be respectful of their time and give them at least 24 hour notice of any showing.

Biggest resource is yourself - know what you are talking about - create or buy spreadsheets to share with your investors, analyze the properties for them and provide them with info - whether they use it or not they will appreciate it and learn to respect you as their agent which will allow you to keep them forever.I work predominately with investors and can gladly speak with you anytime about how my team goes about this.Cheers and rock on!

Respectfully Michael, if you don't think what I cited is relevant nothing I cite will be able to change your mind. 

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.The site has quite a few tools that can be helpful for new members.

The only think negative I can say about Buildium is that their customer service department must be a pretty toxic environment: They are defensive and for the most part start with the premise that the customer must be doing something wrong.

I've used the direct mailer approach to find off market deals, but in this competitive environment everybody is doing that.