could someone please help me with this:

I need to start process ‘proces1’ in the background with parameters ‘-c go –l’. Then start process ‘proces2’, stop it, restart it in the background

I am not sure exactly what you are talking about but csh intoduced(and was adopted by other sh) & for a background process. try # sleep 10 & and then ps. You see the process ID of sleep? If you want to kill it just # kill "$pid" where $pid is the process ID. If you want a short cut there is a system variable $! that contains the pid of the last process put into the background by &. So if sleep 10 & was your last background process # kill $! will end it.

Assuming you want to launch a process called `myproc' with a couple of args into the background.
the command would be:
myproc -t arg &
Notice that the `&' is not a typo. To kill the process simply use:
ps aux | grep "myproc" (to get the process id) then use the kill command.