This book, The Scribes of the Prophet (PBUH), provides an extensive list of those Companions who had the honour of acting as scribbles to the Messenger of Allah SAW in his differing capacities as a conduit of Revelation and head of the nascent Muslim State.
Read the stories in this book and practice upon the lesson they teach you. You will become a better Muslim. The example of the Sahabah is the best of examples. Make these blessed people your role models in life and you will never go wrong.