Click on Products on the left hand side of the screen.
Click on manage products.
Click on "Add Product" on the right hand side of the screen.
You now can fill in all of the information about the product like the title and description. And field marked with * is required to be filled out but the rest are optional.
When you scroll down to the bottom of the page there will be more fields to fill out. And also if you want to donate the money that will be made when the product is sold to a charity then press the charity button and choose the charity from the drop down list and the percentage.
When you have filled out everything press the Next button at the bottom of the page.
It will now take you to the Variation page, click HERE for the guide on how to setup variations of a product. Now click the Next button.
Now you can upload all of the images you have for this product. Click on Select Images.
Search for all of the images you have of the product and when you have selected all of them click Open.
Press upload and wait for pending bar to go and then press the Next button.
You can setup custom attributes and values for this product, for example a red t-shirt the attribute would be colour and the value red. You can add as many attributes and values as you want just press the Add More button. When you are done press the Next button.
If you have a Listing Template already created then you can choose it and list the product straight onto the Sales Channel but you do not have to. Press Submit at the top of the screen and it will then create the product and if you have a template chosen it will list the item as well.
If all of the fields were filled in correctly, congratulations you have successfully added a product. If there is something wrong, an error message will appear and it will say if a field was filled out incorrectly and you might need to make a adjustment to it.