There not much strictly required apart of laptop or PC. 
However you might profit of having a microphone, a digital camera, depending on the focus of the channel you might benefit of having extra light for better quality of your videos.  
If you plan to edit the videos it might be useful to have some video editing software. 
Here is list of 8 Best Video Editing Software for PC
1) PowerDirector 365
2) Adobe Premiere Pro
3) DaVinci Resolve
4) Corel VideoStudio Ultimate
5) Pinnacle Studio
6) Hitfilm Express
7) Adobe Premiere Elements
8) Nero Video
Let me know if I you need anything else
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence