If a property was bid and sold at a Tax sale, can a "lien" be placed against the property before its deeded by the county

You question is not clear. Who would be placing the lien on it? It is possible to place a lien on the property at any time, but placing a lien on...

Can I sue a roommate in small claims court for bailing on a signed lease?

Yes you can. Be sure there are assets on which you can attach. All you may win is an uncollectable judgment.

Is a quiet title an option in my case? If not, what are my options according to Florida Statues?

I agree with my colleagues. You need a local attorney to look at your documents and the underlying facts. Many will offer a free initial...

Are there City/County Inspectors we can call, as tenants, to inspect the crumbling wall around a showerhead in the bathroom?

You can make the request. They may or may not inspect. From what you write, it sounds like you will only be billed the $50.

Unfortunately the cities choose what they enforce. A violation can go on for years if it is ignored. If you want to report the violations, maybe...

Do I have to pay for custom cabinets that the doors will have to be remade due sanding (made waves in wood) &the finish is bad?

Get with a local real estate lawyer. This could get sticky.

Thank goodness no! If your landlord sues, you may have a money judgment rendered against you. Try to work something out with your landlord.

I agree with my colleagues. Contact a local landlord tenant attorney.

What are my renters rights?

Not automatically. Here is a link to a brochure that may be helpful. http://www.tn.gov/consumer/documents/LandlordTenantBrochure.pdf

What can I do to the owner of a home I have leased who has not provided heat in nine months of my lease?

Contact your local legal aid. There are self-help remedies, but you must provide notice and the opportunity to cure.