Depends on what kind of LLC you have how you report it. If you are a Single Member LLC that did NOT elect to be an S Corp, it is a disregarded entity and you file it on Schedule C in your personal 1040 tax return.
You will need to keep good records. You may get a 1099 at the end of the year if someone pays you more than $600 but you need to report all your income no matter how small and if you don't get the 1099NEC. For the future, you should use a program like Quicken or QuickBooks to track your income and expenses. There is a QuickBooks Self Employment bundle you can check out which includes one Turbo Tax Online Self Employed return....
http://quickbooks.intuit.com/self-employed
