When presenting your business plan to an angel investor you must understand that they will be very interested in your spreadsheets and proformas, but you must also realize that it is typically an entrepreneurial optimistic approach, which causes problems with proformas. Therefore, you should have dueling spreadsheets; that is to say the spreadsheets, which take your best guess and double the time, double the expenses to compete with your optimistic approach. You should be able to present both of these to your Angel Investor; who chances are is a retired business person with a little bit of financial savvy.
Secondly, you can start reading, watching and listening to the news online. News are constantly updated online and provide you ”the edge” when it comes to getting the latest information. If you are only accustomed to read the newspaper every morning, you miss out to compete with the others that know how to use internet to find the latest information.