The recent changes page is conveniently accessed from the Interaction Menu on Wikipedia's sidebar (displayed on the left side of your screen). It lists the most recent edits made to pages in Wikipedia. Using this page, you can monitor and review the latest contributions, to discover and correct mistakes and to spot and revert vandalism.
Options can be set to filter and display recent changes according to the preferred criteria (present at the top of the recent changes page, containing three sections: "This page", "Utilities" and "About us"). The available filters are featured articles, good articles, living people, new editors' contribs, IPs' contribs, mobile contribs and by namespace. It can also be filtered according to tags by typing in the specific one, such as "Visual edit", "large plot addition" or "blanking", etc.
Most (although not all) bot edits should be marked with the bot flag and be hidden by default (if enabled, they will be marked with a b in the recent changes logs and in watchlists). If you see a bot edit that shouldn't appear in the recent change logs or your watchlist, please report it to the bot operator per WP:BOTISSUE.