So a little while ago I made my first purchase for my car. It might not be what anyone expected but I bought a book, not any book! A Bentley Publishers E46 Service manual, i know that you could probably find most of the information on the internet but you never know. There is absolutely everything in this book from Diagnostics and electrical diagrams to step by step instructions for pretty much everything! I love this book, so much information if you ever think about getting one I would totally recommend it! If anyone has this book as well I would love to hear your thought about it and if it was worth it to buy for yourself!