Their web site is a free resource with links to your state law but I highly recommend the book for some of the practical advice they provide.As to your current questions:1.

Would be best to get a reputable RE/Eviction attorney in that locality and follow their instructions. 

As long as you have them repaired by a reputable foundation company and include repair documentation / warranty info in your disclosure, you will be able to sell. 

It will come back and they will never live down a bad reputation.

Most accurate rental price data would come from a reputable property manager in that area.

I of course will do whatever I can to provide value to you for your time.  2)  I know that reputations are made very quickly in this business, and I want to make sure I don't get shut out of deals because I've mistakenly done something to cause me to have a reputation as a noob, who has no idea how the game is played. 

@Karina Gomes@Donald SaintValIRA Financial Group is a reputable provider, in my opinion, and a good choice if you would like to work with a company in Florida.

Do you guys do Web chats for your meetings? 

You do this sort of thing and you'll get a reputation in no time. 

Is this a one-off operator who might make it their business to screw people over, or is this a developer with plenty of projects running & a prominent realtor in place, both of whom rely on their reputation constantly.