You can watch "My Babysitter's a Vampire" in several ways:

• The complete series is available in HD quality on Internet Archive, uploaded by a user, providing all episodes for free viewing

• The full two seasons are also available on YouTube via playlists uploaded by fans

• The original movie is available on YouTube as well, including an uncensored version

• For streaming, the movie "My Babysitter's a Vampire" can be watched for free with ads on The Roku Channel, or purchased on Apple TV

• The TV series Season 1 is available for purchase on platforms like Prime Video and Google Play, where you can buy and watch episodes on various devices

Currently, the series is not widely available on major streaming platforms like Netflix, Hulu, or Disney+, but the above options provide legitimate ways to watch the show and movie.