Tomcat 8:无法克服常见错误:CATALINA_HOME环境变量没有正确定义。

I know that this is not the first time that this error has been addressed, but after looking at many posts, I'm not sure where I am going wrong. I am trying to start up a Tomcat 8 that I downloaded. I have zero experience in the Java world. Right now I am missing Microsoft MSI setup wizards :-)I know that this is not the first time that thi