Very good perspective and very easy to digest.

I'm considering buying a 4 acre tract (thinking 30 spaces) within the city limits to house construction workers for various chemical plants in the area.

A post like this will definitely help tract those investors looking for limited partners.

The home is in a tract neighborhood where it's not a mailbox directly in front of the home, but many mailboxes for the neighborhood grouped together.

I have a large tract of land that will likely be developed for mixed use.

Duplexes fall under single family code, so you can build up to two units on a single tract unless prohibited by deed.

I plan to start buying large tracts of land to develop into a subdivision.

This is a new feature we offer that provides data and easy-to-digest data analysis and rental comps for every city in the country. 

TX is very strong as @Joe Gore indicated &  @Hattie Dizmond suggested pick a market.Spend some time digest the old forums on different city, county & state, you will be surprised  how fast you can learn on yourself, Be patient, RE knowledge take time . 

When I started to digest some of the advice in the guide, I began to really concentrate on what I and the investor were focused on, which was to find and make deals happen.