Finding a reliable link for the show with integrated subtitles requires knowing where the rights currently reside. Because the show was produced by AB Productions, much of the library is managed through their official channels.

Official YouTube Channels: AB Productions has done a remarkable job of preserving their legacy content. The "Génération Sitcoms" YouTube channel often hosts full episodes. While they don't always have "hardcoded" subtitles, you can often use the YouTube CC (Closed Captions) feature. If the auto-generated captions are enabled, you can set them to French to follow along.

Subtitle Databases: If you already have the video files, you can search for standalone subtitle files (usually in .srt format) on websites like OpenSubtitles or Podnapisi. Look for "Hélène et les Garçons S01" to find files that match the first season. You will then need a media player like VLC to load the subtitle file over the video. The Challenge of Vintage Media