New LLC -- What documents am I missing?

[John M.]

I had a lawyer setup an LLC for me.
He gave me 2 PDFs.
One PDF is the 'Certificate of Organization', the other is called 'filing documents' and has inside it the receipt and something titled 'Articles of Organization'.

I feel like I'm missing something? Is that all there is to it?
I read that I don't need a DBA since the LLC name is the real name.
I do need an EIN though right?
Do I need an 'operating agreement'?
What else do I need?

Thanks