Searches
Sorting was about putting things in order. Searching is about finding one thing quickly once they are. These step through the same way the sorts do: press play, scrub through the steps, and watch the source highlight line by line as each algorithm closes in on its target.
Linear search just walks the list from the front and checks every value until it finds the one you want. It is the baseline every faster search is measured against. Watch it run step by step.
More searches coming weekly.