I've never used Oracle database , and I just tried installing (11g express edition) last weekend. I was expecting to see some kind of UI where I make tables and queries and views and all, like Microsoft Access, and well I don't see anything of the sort. Can someone help me get started? Maybe it just doesn't show a UI because I had an error during install (and a warning)?

-NETWORK CONFIG WARNING ( BECAUSE iIM NOT ON A NETWORK, JUST THE INTERNET)
-ORACLE HOME PATH FOR SPACES ERROR

All I want to do is see that I can make a table, or tablespace, or anything.

My items in the start menu are:
Application Development
Configuration and Migration Tools
Integrated Management Tools
Oracle Installation Products
Warehouse Builder

I don't see any main UI where I actually creat a table or tablespace or anything.

I have a book on 11g but it only shows how to upgrade, not how to install or get started.(has instead, Getting started with Oracle Architecture)