I read couple of books about REI, and I understand that during first years of investing I may do more mistakes and I want to make them frugal. 

If anyone has any suggestions of strategies I would really appreciate it!

Someone gets injured in the basement your home owners insurance probably will not cover it and the liability would be pushed back on you.Would suggest discuss the finish with a Licensed Contractor, Licensed Expeditor and maybe a zoning attorney in regards to adding a unit to current zoned two unit converting to a 3 unit.Also, when buying a two unit and converting it to a 3 Unit, read your documents with out knowledge of the conversion the bank holding your mortgage could call your mortgage.Let me know if you have any questions.RegardsJoe Scorese

I have been reading and watching about everything and under stand there is no “right way” to do it, but i just want to express my thoughts and questions and get some feedback before i pull the trigger on some of my steps.

I've read Rich Dad/Poor Dad and Rental Property Investing by Brandon Turner. 

Hello and good day to all who read this, my name is Timothy Wagner and I am a newly licensed real estate agent in the state of Texas.

Any suggestions on a VOIP phone service?

Very nice, very respectful and overall super pleasant and appreciative...BUT...they checked in and wondered if I had a wall clock, they needed a reading light, wondered about a 6' extension cord or if I could get them one, were there more hangers etc.

I am a little interested in STR, so any information on tips & tricks as well as your experience, numbers, and photos would be great. 

Andre - For starters I would recommend you read "Short Term Rental, Long Term Wealth" by Avery Carl;   You can find that book right here on BiggerPockets.