User guides for the Acer Aspire and other Acer computer models are available for download at Acer.com. Access the user guide for a specific model by visiting the Support section of the website.
From the home page, click on the Support link in the header. Click on the Drivers and Manuals link to begin the search for the device. Type "Aspire" in the field that allows search by product model, then scroll through the menu that appears to find the correct model. In the next section, select the Documents tab and click the Download link next to the correct user guide.