For a start, you should understand that Java and JavaScript are unrelated languages.You might learn programming at the Udacity website - they have several introductory programming courses, including courses in Java. Even though the courses are announced as paid courses, you can still access the training materials (videos, and many practice activities) for free.
The programs you should get - well, the course will tell you what you need, but basically you need to download Java (the developer version); most programming in Java is done in an IDE, so you should get some IDE as well. There are several options for that. But it's best to get started with the course, and get the downloads as you need them.
Javascript is more easier, while Python is more complex. So, maybe you should try Javascript.
Oh,I think you should watch Doglus clockford about in javascript. He said that Javascript isMisunderstood Programming Language.
You should learn HTML, JavaScript and other web programming languages. Leave learning Java until you have a good reason to learn it.
You can go knee deep and start learning the more difficult C++ or start by learning an easier one like Lua or Python. I have started learning C++ but have experience in Python, Javascript and Visual Basic which helps slightly.
If you add javascript to the server page then it is possible. But it would be bad programming practise. Ideally the ajax requests should be on an external javascript file and that should be referenced by a client side page.
Not sure what you mean by setting the javascript program as the background of your webpage, but if you mean that you want to incorporate some javascript functionality to your webpage like changing the html content when people click on an image or hover over some text, and you have not learned javascript yet, a good place to start is Lynda.com. You should also consider just learning jquery. Jquery is a much easier to learn and simpler to type code that employs the same functionality as javascript and much more. You can also learn how to write jquery on Lynda.com. You will just need to download their library or link to Google's version of it by placing one line of markup in your html document, then you create your javascript document and write your scripts in it.
The first step you should take when creating a program is to write an algorithm for it. An algorithm is a programming tool that offers a step by step solution to a programming problem.
Ample of material is available on the web. Just type html tutorials or java script tutorials on a search engine. Programming will be easier if you follow the trial and error method of learning. If you read books you will gain a good knowledge of concepts of programming but would not learn how to code.
Netscape is very outdated and is not used any more. i believe they are now Mozilla Firefox, but now days the internet browsers that you can use all should be javascript ready. i know mozilla firefox is javascript ready and the most up to date internet explore is javascript ready. i dont believe there is a difference in the programming i believe on whatever browser you have it should still render.
You should have programming instruction in the user manual.
There should a programming guide in the users manual
There should a programming guide in the users manual