Here are the standard things I do:-add listing to MLS,Zillow/ Trulia, list hub -create Facebook property listing with cityblast-add to Facebook personal and business page-create flyer/brochure (print and digital)-posting to Instagram-post to craigslist-email blast to all MLS agents-send to email list of personally known agents in the areaWhat steps do you take?

Just wonder if I start facebook and instagram pages, worry if people will steal my business ideas and take deals?

I would definitely check out the channels of Matt McKeever, Mat Piche and Jeff Wybo, as well as their instagram content. 

Not much advise on getting the Air-BnB started, but there website is pretty helpful, and there are tons of AirBnB pros on Instagram.  

Who else is a good Instagram follow for fix and flip?

Don't build it, before you start working it.Call 100 of those people every day for the first 30 days to build it.....missing a phone number, email them and get it, and then call them.Have a phone number, but no email, instagram, or fB, get those.Ask all of them to use and test your personal real estate app.At the end of the 30 days you should have 2000-3000 people in your database. 

I have some experience building websites and doing SEO so I'm hoping to improve on those skills and be able to leverage that in Real Estate.I am pretty familiar with social media marketing as I have just implemented some strategies helping my fiance to re-vamp her blog (twitter, instagram, tumblr, facebook, google+, and on and on...).

People post rentals on Facebook and Instagram?!?!? 

All of our retail store's have websites plus full social media exposure like FB, LinkedIn, instagram etcThanks Juan for the suggestions but I hate cold calling.

.- Think hard about all of the ways to get the word out beyond the MLS (and all the other feeder sites...) and good signage, such as Craigslist, local professional vendors (mortgage brokers, attorneys etc), flyers all over town, social media (F/B, LinkedIn, Instagram, Snapchat, YouTube etc), letting very well-connected people know it's out there, local classifieds, your own personal network, mega open houses (paid for by sponsors - I even make money sometimes); I'm sure you can come up with a few more!