In order to create a website you will need tools for various tasks ranging from code editing to image manipulation. Here is a list of some very useful tools.
An excellent free tool with WYSISYG functionality to easily create your website.
The best free image processing application that you can use to create graphics for your website.
A very good free opensource editor for Windows that fully supports HTML coding. It features multiple tabs, project management, spellchecking and many more.
Amaya is W3C's editor. It is free and features a build in web browser, real-time code validation and is available for all the major platforms(Windows, MAC OSX, Linux).
The best FTP client around. It is free, powerfull and is available for all the major platforms(Windows,MAC OSX, Linux). You will need it to upload your pages to your web host.
