Please click on the links, give them a read, and share your thoughts in the comments.First is a post that I feel will help not get overwhelmed with the amount of info that is here on BP:https://www.biggerpockets.com/blogs/5868/52761-the-simple-guide-to-getting-started-on-bpThe second is a post that will help get you focused with your real estate investing goals:https://www.biggerpockets.com/blogs/5868/52743-im-new-to-bp-any-advice-would-be-appriciatedThe last one is a post that will help you choose an “investor friendly” real estate agent.

Also, any recommendation for choosing a brokerage in Fort Worth? 

"The court's ruling has important implications for other 'turf states' and vindicates the rights of commercial real estate investors, who should not be forced to choose between seeking fair market value for their property or violating state laws," says Green, who led the lawsuit on behalf of Marcus & Millichap.

Choosing the right people to work with is key. 

I don't think it matters if you choose an S corp or LLC.

Choose more than one.

Then combine them at a later date into one parcel if you choose to do so.

They may choose to portfolio and keep it in their bank but they might choose to sell it to another bank etc. the day after it closes or 2 years later.

Even though you will be out of pocket up front for the expense, it will take years to get all of the tax deduction.5) Choosing your tax strategies with legal entities and exchanges will change the timing of your tax bill and the tax rate at which you pay.

If you did not follow all the rules, then you should return the whole Sec Dep within the 30 day window and walk away from this ordeal and be glad you are getting the better part of this ordeal.As others have mentioned, you can not arbitrarily choose to deduct months of loss rent from her breaking the lease.