Press Reader is an App for tablets and smartphones and a website for PCs that allows you to download single newspapers.
If you use a PC, visit www.pressreader.com; if you have an iPad, tablet or mobile phone, then download the Pressreader App from Playstore, App Store or Windows Mobile Store.
Once you open the App or the website, the options are clear. You simply choose the country where the newspaper is published (Spain in the case of CBNews publications) and then click on the edition you would like to download.
You are charged per copy, which is downloaded entirely and stored on your device.