Welcome, @Nevin Ashley ! I grew up in Newburgh (my sister and I both went to Castle). My sister lives in Evansville now :). My parents live in Boonville. The only thing I wish I would have done? I wish I would've started sooner.
An LLC is more personal preference. I set one up and intend to set a separate one up for every two properties I obtain. You'd probably only want one for 'flips' unless you intend on keeping some of them. Some people think LLCs are a silly idea, and you can protect personal assets with an umbrella policy. That's a decision you'll have to make on your own! You'll want a good real estate attorney who can help you with any weird questions along the way (Do i need separate bank accounts? What protection does an LLC offer in Indiana, and how do I ensure I'm protected?) Things like that.
You'll also want to find a CPA if you don't already have one. Once you have a property or two, it gets complicated and TurboTax isn't gonig to cut it anymore.
Also, see if you can find a real estate investors group/club in your area. If nothing else, it's always nice to talk to people with similar interests to help you stay motivated and keep from getting discouraged when something goes wrong.
That being said, I'm in no way an expert! I'm fairly new to the game, too and have learned most of my lessons through the experience.
Good luck and welcome to BP :)!