Well for one, join a faction. They will keep you busy and will even teach you how to use the interface. There are many active factions to choose from.
Another thing to do would be to goto the White Scenarios board, Take the RP training. Afterwards, Roleplay in the meeting hall in the RPG Centre, and join White scenarios in the white Scenario board.
When joining a faction, make sure its one that will give you a ship to fly around in and pays money.
There is plenty to do once you get cash. You can even starting founding cities and building facilities. You can travel and explore the galaxy. You can chat in IRC or chat on the forums. You can also try and gain CP to either get credits or change into ships or vehicles.
You can add life to teh combine by making NPC's as well. Join a faction and a world of opportunities will be open to you.
Just one thing. Get the idea of force sensitivity out of your head. It takes people several years to achieve, and some of the oldest players in the combine still do not have force sensitivity. So enjoy the game and your character without the hope of force sensitivty and you will enjoy the game much more.