how to use top

[Thufir]

I read a bit about how to use ps to kill processes:

adminlinux.blogspot.com/2006/12/zombie-process.html

but for "top" it just said to use "top", however, top will only show, 
well, the top processes.  Can I sort the command column?  search the 
command column?  I end up launching the System Monitor GUI and sorting by 
process name to find what I want to kill.  Can I do that in top?  Or 
somehow "scroll" top?

Also, can I sort by process status from top?

thanks,

Thufir