https://doc.ibexa.co/projects/userguide/en/latest/pim/products/ 

With PIM, Ibexa DXP handles products offered in the website, including their specifications, attributes, assets, variants and pricing.

https://doc.ibexa.co/projects/userguide/en/latest/pim/products/#product-types 

Product Types represent categories that a product can belong to. They define what combination of Fields is available in the product, and Fields can store different types of information. - I would change this definition and not mix it with categories. I would rather use "product types are templates that contain a common set of fields and attributes.
Maybe in this section we could also mention, which fields are added by default.

https://doc.ibexa.co/projects/userguide/en/latest/pim/products/#attributes

Checkbox - represents a boolean value (YES/NO)

https://doc.ibexa.co/projects/userguide/en/latest/pim/products/#product-completeness 

This tab lists all tasks required for product configuration, including:

• content (such as images and descriptions)
• attributes
• assets
• variants (*if a product type contains attributes enabled for variants)
• availability
• prices in different currencies
• translations

We should also update the screenshot because "edit' buttons are present in Prices. Please put the caption below. 

https://doc.ibexa.co/projects/userguide/en/latest/pim/products/#product-catalogs 

Please change the screenshot into a more relevant one and add caption e.g.:

https://doc.ibexa.co/projects/userguide/en/latest/pim/create_product_types/#create-product-types 

Here we could mention about Specification field where the user should define VAT categories. Many people forget about it now:

https://doc.ibexa.co/projects/userguide/en/latest/pim/create_product_types/#work-with-product-attributes

Duplicated sentences: You can also remove while groups, or single attributes from groups that you do not want to use for the given Product Type. Do this by clicking the trash icon next to the group or attribute.

https://doc.ibexa.co/projects/userguide/en/latest/pim/create_edit_product/ 

I guess, that these 2 methods were deprecated in v4.5 or even earlier:

• While viewing a Product Catalog in the Content Tree, click Create content at the top of the screen. The new item appears in the tree.
• Click Create content in the upper-right corner of the My dashboard screen. In this case you have to choose Content Type and select where the content will be located.

6. If you are adding a new product, click the Create button. If you are editing an existing one, click the Update Edit button.

https://doc.ibexa.co/projects/userguide/en/latest/pim/work_with_product_categories/#add-product-category-to-product-category-hierarchy

https://doc.ibexa.co/projects/userguide/en/latest/pim/work_with_catalogs/ 

Let's add some screenshot showing creation or edition of catalog: