Is it legal to download copyrighted materials on my computer?

Yes, If you paid for the materials from a reputable source.   Digital media, such as music, movies, games, books, and applications, can be purchased online from many different marketplaces such as iTunes, Google Play, and Amazon. Once purchased, you are permitted to keep a copy of the file for personal use.   Streaming services, such as Netflix and HBOGo provide access to a wide selection of titles for a monthly fee. You may view or listen to this content as long as your subscription is active.