However if it sounds to technical for you you may skip most information and come back to it later. However, you must know how to list and find things you own, so read the paragraph after the next one. Building relies on the MOO's object-based architecture. Most of those objects can be customized as you will learn later. Usually you are least expected to add a description.
Most MOOs do have some place where generic objects are on display.
Other MOOs have implemented commands that will list the most important generic objects. The last important thing to know is the object naming and numbering scheme. Numbers are not always very practical, therefore there exist other ways to refer yourself to objects. Usually you can only refer to objects by name if you are in the same room, or if you use some special commands that will go and find a name in some database. MOO users also should have a look at section 2.5 on nicknames that allows you to specify your own aliases for any object you want to remember.