We have a trust, now what?

We are in Oregon, USA. Years ago we had a lawyer draw up a trust for us. But looking at the trust document now, I have no idea what we are supposed to do with it. No assets or property has been added to the trust. What is the procedure for adding assets to the trust and also what kind of assets should we add to the trust? Most of our assets are in my 401k and other investment accounts. These already have beneficiaries. We do have the house where we live and my wife's jewelry. Thanks in advance for all the responses!