User blog comment:MrTyeDye/I want to get my brother hooked on TLH; what's the first episode I should show him?/@comment-32639912-20170806175614

I would recommend showing him Left in the Dark, Project Loud House, and Space Invader, because not only were those the first few episodes produced, but they have the right amount of pacing, simple-yet-intriguing plotlines, and the siblings are in-character, so they're perfect for beginners.