Iptables blocks me -- help

Hi

I just messed with IPTABLES.
Now i have stopped iptables.

I want your help to properly configure it.

I want to only allow purt ftp port, httpd port and ssh port
I did something and I don't which rules are working.

I just blocked by IPTABLES and just now got connected again.

there are tons of iptables tutorial in google .. search

Thanks. I fixed it.

It is now secured.
But yum and wget is not downloading data while iptables is running.