Since the LLC was registered as a Partnership with the IRS, you would need to file a business tax return, Form 1065, Return of Partnership Income first.
The K-1's would pass through the income and expenses of the LLC and be reported on your personal income tax return, IRS Form 1040.
What's a K-1? Schedule K-1's are issued by pass-through entities.
A pass-through entity doesn't pay income tax; rather, the entity's profits and losses are "passed through" to the entity's partners, owners, shareholders, or beneficiaries on Schedule K-1, who in turn must report the Schedule K-1 on their own personal tax returns.
Partnerships, S corporations, estates, trusts, and LLCs are all pass-through entities.
In order to complete and file a 1065 partnership return you need TurboTax Business (different from Home & Business). TurboTax Business is for windows only. It is not available as an online product or for MACs. You can purchase and download the TurboTax Business installation program at https://turbotax.intuit.com/small-business-taxes/