Question

这两句英文对吗I want people you know to teach me the use of this to

Answer 1

两个句子不只是累赘,也有逻辑问题,听者会不知所云,建议考虑这样改：

I want to have people that you know teach me how to use this tool.

（另外,把 want 改为 would like 更礼貌、委婉）

I've always wanted to kill them with things that you didn't want me to use.