SWG : General Discussion

choose commando as your profession,
once you get off tansari point station (new player tutorial)
buy a ticket to restuss, rori. choose imperial faction or rebel faction, (rebel faction is to the right when you head straight out of restuss and imperial is to the left.

Next, sign up to be the faction of your choosing and head to the bottom of your factions base and receive the antenna sabotage mission. next, head to the closest opposite faction antenna and use the radial menu to set explosives, wait ten seconds and repeat. once you have completed the antenna mission go back to the mission giver and complete the mission, get it again and repeat until level 30.

this takes about a day and a half if done all day.