You will find tons of info in the DIY section to keep your baby running in tip top shape. Once she is reliable then Mods & even coding become an option for you. Just do your reading before asking the question... there is so much information on this site that you'll more than likely find an answer sooner by reading & using the search feature than asking a question.
Welcome to the forum and congrats on your new ride!
2004 BMW 330Ci Convertible