Welcome to the site! A few pointers:
Go read the rules, all of em, they will give you a great insight on where to start and what not to do and what is OK.
Go to the factions page and decide where you want to align. We have tons of factions to choose from, and you can even be in multiple factions, so pick one you think you will like. ( Shameless plug: Join the Galactic Republic
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Once you figure out where you wanna be and what kind of character you want to make, head over to the character creation forum, and make your character. If you are a force user ( Jedi/Sith ) you start out as either an apprentice or a padawan. You will train with a master and progress through the ranks, its fun stuff, trust me I am a Jedi.
Once your bio is up, you are in a faction, and you are ready to get the ball rolling post your intro thread. For FU's, you will usually want to start in the designated IC training grounds. You will get a master and begin your training. But don't stop there, go check out the SW Open Roleplaying forum and see if you can find somewhere you want to write. Can't find anything? Go to the Roleplay Discussion area and see if you can find anyone looking for roleplayers.
Trust me, it gets less intimidating, you will become obsessed with this place and before you know it you'll be a washed up old veteran remembering the "Good old days". If you have any more questions, comments, or concerns feel free to PM me and I will answer anything.