The Lenovo Yoga series of laptops include a user manual with the purchase of the product. Digital copies of Lenovo user guides are also available on the Lenovo website.
Click on Support on the Lenovo main website. Under Technical Support select Laptop, Desktop, Tablet, Workstation and ThinkServer Support. On the new page, select View Manuals. The website prompts you to select your laptop series and model; once entered, the website displays a page containing information and downloads relevant to your laptop.
The user manual is available in the Manuals section. Click on Show All at the bottom of the list if your user guide isn't visible.