I would recommend that you don't ignore it; repair the drywall, monitor it and see if the drywall cracks in the same locations again.

Why don't you take a few months and attend a few of the BiggerPockets webinars hosted by Brandon, listen to some of the podcasts, and read a few of the recommended books.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Didn't have a lot of free time, which my wife didn't like.Read copy & paste below to better understand Property Classes:------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

I recommend people only sell if (a) you can invest the capital in something that performs better, or (b) it aligns with your goals.

As @Nathan Gesner recommended, it's a bit early to worry about this!

Can anyone recommend sources for contact information for property owners?

I recommend you figure out what you want to do, then actually do it to see if you enjoy it, have some skills, etc.

Any general tips and/or want to build my team (realtor, property manager) recommendation would be helpful.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?