What is java?
Java is a general purpose, cross platform, object oriented programming language and it is really fun to code in java. That's all you need to know. Ok?

Getting started with java: To start coding in any programming language, you need a computer, a brain and a lot of dedication. Do you have all these? Yes? Then continue reading.  Java was developed by Sun Microsystems in early 1990's but currently it is under Oracle. So we will be using tools from Oracle to code in java. The first thing we need is Java Development Kit (jdk). The second thing you need is an IDE. An IDE (Integrated Development Environment) is basically a software that includes basic tools and an environment needed to code. We will be using the NetBeans IDE (from Oracle). Note that java programs require "Java Runtime Environment" (jre) to run. Instead of downloading and setting up jdk, jre and IDE seperately, we will use the NetBeans + jdk bundle (again by Oracle) which includes all the necessary things in one package. Click here to visit Oracle site to download. 

In the webpage that appears, accept the license agreement  and download and install the appropriate version for your PC. Make sure to download 32 bit or 64 bit as per your operating system. See this 
How do I determine if my Windows is 32 bit or 64 bit? If you still can't find whether your Windows is 32 bit or 64 bit, download the 32 bit version.


 Installation in Windows:
1. The installation starts as follows. Wait for the installer to load.

2. In the next screen that appears, click next.

3. Yeah, it's really boring, click next again. You can change the installation path if you wish (I don't think you will).

4. Again click on next. I promise I'll never ask you again to click on "Next" in this article. By the way, you again get the option to change the installation path.

5. Review the installation path (not actually required to read it again) and click on "Install" 

6.  Wait

7. Click "Finish"

8. Congratulations!!!!! you have set up the IDE.

Step 9. If you have any queries, ask in the comments.