Random Useful Sites On Networking
This is my go to for port information. Lots of other features as well.
http://static-pt-assets.s3.amazonaws.com/tutorials71.htm#stub
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
https://www.activecountermeasures.com/blog-wireshark-for-network-threat-hunting-creating-filters/