Go to Stock in the left hand bar, and then Products.
Click New Product and fill in the name of the product.
For a new category ie Shampoo or a new manufacturer ie Redken. type the new title in the relevant box and click the button that comes up saying 'Create *name*'. Otherwise, select the correct preexisting category or manufacturer.
Fill in the rest of the information, including the barcode if necessary and the stock amounts. Minimum and maximum stock are used when generating orders to ensure you maintain ideal stock holdings.
Click Create and then click Save Changes.
Repeat for all products.