Bigger Pockets is a great resource and wealth of information.However, if you do not have the time to read through hundreds of post and articles here and than organize and figure out what order you should learn in, get a course, because time is money. 

I have been researching about tax sales and found this forum and have been doing a lot of reading and learned a lot so far. 

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-bp The 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.

I have done a bunch of reading and have learned quite a bit already despite not having made contact with anyone. 

You should also read some of the books recommended on the podcasts.

Can I do 10% for a year or two and then refinance into a more typical 25% down 25 year loan that I read about?

You can start by read the terms and conditions of each property that you look at on these websites.

I never been south of San Antonio but I read and heard that there is lot of growth in that area...Here is projection of population ... and looks like 50-100% growth expected in that region...

I was told I still had the option to initiate a transfer, however, I would have to pay the 3% transfer fee and pay the variable 14-24% interest rate while funds were in use…Just like that, 40k of capital to go out and buy assets and get them to cashflow……gone.As a value-add real estate entrepreneur, I understand with every challenge encountered, there is a lesson to be learned and an opportunity to evolve.

I've been studying it and reading books non-stop for about the past 6-8 months and I can't wait to get started.