Hello and welcome to BP!
1. Best place to start is right here on BiggerPockets. This site is full of information and between the forum, podcasts, and blog posts you can build a great foundation of REI knowledge right here. Start with podcast #1.
2. Whatever strategy you choose will depend on your current financial position, your goals, and your lifestyle. Research them all but I highly recommend you only choose 1 for now. It's easy to get overwhelmed if you try to handle the intricacies of a flip while dealing with tenants and and a direct-mail campaign.
3. In my opinion this is first and foremost a people business. Don't worry too much about the technical skills needed for a renovation. Instead work on finding a good deal and a good contractor to work on it. Focus on making sure your surround yourself with competent, honest people and making sure your numbers make sense.
4. I'm a wholesaler so I'm biased here but there are hundreds of ways to find deals. The easiest and cheapest way that I've found is just through good old word of mouth and REIA meetings. Be about your business and don't be afraid to talk about it even if you're just starting out. You'll be surprised what kind of off-market deals pop up when just mention it to the right people.
Also find a wholesaler you trust. If you're cash buyer who closes deals on a consistent basis they'll be your best friend.
5. Get a deal first. Worry about starting a company after you have a deal or two done. Until then it's really just a waste of time.
6. When talking to a seller just be ginuine, friendly and professional. Tell them what you do and what you like about the property. You're never really convincing someone to sell you a property. They either want to sell or they don't.
7. I'll leave the tax Lein questions to someone more knowledgeable. Not my cup of tea at all.
You got this! Don't let it be a failed new year's resolution. Put in the work and learn as much as you can. Then put that knowledge to use. It won't come easy but it will come.
Remember: imperfect action is worth more than perfect inaction.
Make it a great 2017!