First you need to be a hunter and at least level 14.(can be done if under 14)
1. First you head to any beginning town of your opposing faction.
Example: Durotar, Valley of Trials
2. Tame any beast required for a quest. Name it according to what it was originally called.
Example: Mottled Boar
3. Now you use Eye of the Beast and control your new pet. Then type "/pvp" so they can attack your pet.(if your under 14 you can try your luck of using the command "stay" on your pet action bar)
4. hit "/" or whatever your default walk key is and make some sort of useless path around a low level noobs.
5. If they are stupid enough to attack it then pop up and aim shot them or whatever means you use to kill them.
Im aware of the PvP show the symbol but most people disregard this as they are either stupid noobs or think that it's nothing. Don't care if you think this is dumb.
have some fun.
(havent done this in a while so if you want to add to this feel free.)