There are a number of software accounting packages available and you can usually download a trial to see which one has the best functionality to work in with your business.  As a Sunshine Coast Bookkeeper I have been using and working with Reckon Accounts (formerly QuickBooks) for the past 16 years and still enjoy it. They offer desktop and cloud solutions and have a range of products to suit any size and shape of business.
Once you choose the software you like invest in getting hands on training so you get set up correctly from the beginning and get the most from you accounting software.