1. Mikrotik Unlimit Browsing But Limit Download + Youtube

Here is a script:

/ip firewall layer7-protocol
add name=L7-Youtube regexp=youtube.com|googlevideo.com

/ip firewall mangle
add action=mark-connection chain=prerouting connection-bytes=\
    262146-4294967295 in-interface=ether1-gateway new-connection-mark=\
    All_Download protocol=tcp src-port=21,80
add action=mark-packet chain=prerouting connection-mark=All_Download \
    in-interface=ether1-gateway new-packet-mark=All_Download passthrough=no
add action=mark-packet chain=forward comment=youtube layer7-protocol=\
    L7-Youtube new-packet-mark=Youtube-Packet

/queue simple
add max-limit=3M/3M name=Youtube packet-marks=Youtube-Packet queue=\
    default/default target=""
add max-limit=1M/1M name=Download packet-marks=All_Download queue=\
    default/default target=""