You’d need to file the Articles of Organization with the Colorado Secretary of State (the cost is around $50), get an EIN from the IRS (which is free and can be done online), and possibly draft an operating agreement, which isn’t required in Colorado but is still a good idea.

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

I would like to do the state filing myself, because its easy and cheap.

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

These tools help ensure deadlines are met, budgets are controlled, and teams are coordinated.

Here's a spreadsheet I made that will help you think about the house hack vs buy vs rent decision - available for free here on BiggerPockets: https://www.biggerpockets.com/files/user/scotttrench/file/ho...

.)- We file our taxes as joint / married- Her tax deduction benefits from qualifying as a real estate professional from the STR can offset my W2 income. - She can use REPSTRACKER for thisI then of course have a plethora of other questions in terms of book keeping (tracking all purchases etc...) but I will save those for another time unless someone has the best offline resources I can start to learn from? 

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

If they continue to not return phone calls, my recommendation would be to contact your state securities and financial board and file a complaint.

They will need to file a partnership tax return, and each owner will receive a K-1, which will include their individual SSN.