Read millions of Kindle books, magazines, and audiobooks for £0 Amazon is offering 3 months of its priciest monthly subscription — Kindle Unlimited — for free.

Amazon has launched a huge Kindle sale as part of its Prime Day event, with hundreds of books just €1/99p for a limited time.

If the e-book app on your phone or tablet is overflowing and full of outdated files, use these tools to tidy it up.