Redirecting port 80

I would like to setup a firewall rule in which any time someone tries to browse to our router on port 80 (as in destined for any IP that the MT is listening on - not if a customer wants to browse Google!) it gets redirected to our main website http://my.domain.tld:80

I know this is something in the firewall rules, but I am severely in experienced in understanding these things, still =(

You would want to do a dst-nat rule.

Here is an example
/ip firewall nat add action=dst-nat chain=dstnat comment=“Redirect http” disabled=no dst-address=IP.OF.ROUTER dst-port=80 protocol=tcp to-addresses=IP.OF.WEB.SERVER to-ports=80

You will also want to make your company website the default website for your server so that it responds to all requests sent to it.

Excellent! Does exactly what I need. Thank you very very much =)