Installing from a jar filr

[Avraham Hanadari]

My newest challenge involves finding a HTML editor with Homesite
functions. I used Arachnophilia years ago in Windows and I just
downloaded a jar package to see how it is now. This is where I'm stuck. 
I've never installed from a jar file before. This is another step in my 
Linux education.

The Arachnophilia instructions say:

Put the JAR file you downloaded (Arachnophilia.jar) anywhere appropriate 
on your system,  be sure you have also installed the Java runtime before 
running Arachnophilia.

Open a command console (Linux: shell console), move to the Arachnophilia
program directory, type "java -jar Arachnophilia.jar"
For convenience, this command can be made part of a shell script, and
those using X windows can easily make a desktop icon.


1. What is meant by "anywhere appropriate"? Should the jar package be 
left on the desktop for this operation?
2. If not, where should I place it?
3. What is the proper syntax for changing a directory?

Thanks in advance.

Avraham