one day i my brother joined a faction i joined a different faction and accidentally violated a rule(we both share the same internet line or something like that and we can't both be in a different faction we have to be in the same one) i leave that faction try to join the faction my brother was in and then i was denied. what do i do now?.
Well all you can really do is talk to someone in your brothers faction and see if they can accept you to join them. If not then your basically stuck being freelance. Though some times you can make good money freelance.
For now, stay freelance if you need to, but your past affiliation won't make a difference with that many factions, especially since you probably weren't a prominent member. Generally factions are willing to be accomodating, especially when the multi rules are involved.
That said, that very rule is currently under discussion and may be lifted soon; there will be a Sim News update once that occurs. So hopefully this will not be an issue for you much longer.
There are plenty of adds in the classifieds as well as the commerce forums looking fore hired hands. Try to get a job with one of them doing building, piloting transports, etc. You can make pretty decent money as well as experience and contacts. If you get good at what you are doing, you may decide to stay freelance and start your own business someday. Good luck and have fun.