The stories disappear very quickly, so it's better to do it within the first day. Open the story, copy the link, or username and go to a story saver site, then paste the story link or story username. If you want to download instagram story clips of good quality, then you need to choose a tool that supports photos and videos. Read an easy how-to article on Boostbysocial which explained the process without any confusing terms. Just keep in mind that it is OK to save someone's story to view by yourself, but it is not OK to post their story anywhere without asking.