Starting an Ai channel is great idea but if you are completely new at it this can be a challenge for you. I suggest you to start simple rather then learning every Ai tool at once. First choose your niche and remember select that one about which you post enough video to grow your channel I mean about which you have lot of knowledge so that you write a script on it to generate video. If you don't have any idea about script then share your idea with chatgpt and ask to write a script. Follow the basic work flow like research, script, voiceover, video generation, editing and thumbnails. There are many tools for generate voice over and videos/ visuals so you can choose anyone some tools give you some free credits or some are paid. Mostly used by creators are higgsfield, kling Ai, veo3 and Sora for video generation and elevenlabs for voice over. After generating videos and voiceover use canva or any Ai tool to design a thumbnail then edit the video with effects, filters and add sfx to make it more better and upload it.