使用dbo Schema命名的SQL Server表

I've been finding SQL Server schemas to be very confusing. Maybe you guys can help me clear up some confusion. I'm using SQL Server 2008 Express and MS SQL Server 2008 Management Studio but I think my questions are relevant to any MS SQL Server 2008 version. I've been experimenting with different databases and different instances of SQL Server on different servers. For example, I've been doing some work on our company server but I've also been working quite a bit with some databases on my shared web hosting server. This might be part of the reason I've entered into some of the confusion. I've been finding SQL Server schemas to be very