If you just want the LED to flash, you don't really need a microcontroller. All you need is a "555" chip.Have a look at some of these Instructables to get the information you need.If you are determined to use a microcontroller, though, then you need to have a look at these projects.In both cases, the equipment needed is detailed in the project, and many of the microcontroller projects also include the coding you need.
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thanx for ur link
I assume you want to learn about microcontrollers, and an LED blinking is just what you want to do for your first project. You can pick up an Arduino for pretty cheap. It's a good board for people wanting to experiment with microcontrollers, and is particularly newbie friendly. All that's needed is the Arduino board itself, a PC and a USB port. It even has an integrated LED you can blink so your first project will require no external components. Though to get the most out of it, you'll probably want to get a protoshield (it's a breadboard that docks on top of the Arduino) and some components like piezo buzzers, potentiometers, LEDs, light sensors, etc.