You can find Stephen King's short stories in many of his collections. For example, 'Night Shift' is a well - known collection that contains a bunch of his short stories. It's available in most bookstores, both physical and online ones like Amazon.
Another collection is 'Skeleton Crew'. It has some really interesting short stories as well. Libraries are also a great place to look for these books. You can ask the librarian to help you find the collections that contain Stephen King's short stories. They can often direct you to the right section and might even be able to recommend specific stories based on your interests.
Some of his novels also include short stories within them. So, when you're exploring his works, keep an eye out for those. For instance, certain editions of his longer works might have bonus short stories at the end.