I am in the process of filing taxes.

How was the process?

I’m excited to start this process can’t wait for the next one! 

What's the ideal business structure in Texas for sole-owner, flipping business that offers anonymity, tax efficiency and asset protection?

In my opinion, more ethical marketing methods include SEO, postcards/letters (which I do not find disruptive... the line is rather or not the marketing interrupts me. if I am already processing mail I don't mind eyeballing a few wholesaler mailings per day while I'm doing it), building relationships with realtors and others...

What questions should I be asking, How to structure an offer, and why do lot loans seem to all be the same? 

Just be sure to confirm in writing how much they would charge to process a bill like this.

Ive been investing for a few years now and have 3 properties which are STR's and all cash flow.I own all these properties under my LLC which is the holdings and operating.I have a bank account with Chase where all the money from these rentals is deposited which is under this same LLC and I am a single member.Now that I am getting ready to graduate college and take investing more serious what is the best structure for me?

You may also structure this as a delayed purchase if the property is free and clear.

There may be ways to get them out without having to go through lengthy eviction processes.