Selenium script is nothing but identify elements (text,text box, links, buttons, checkbox, windows etc.) on webpage and perform operations in order to automate it.
So those elements are identified by locators, (will explain locators in next topic). And above mentioned tools are played important role to identify locators, so install it first.
Firebug is Add-on to Firefox browser.
Open Firefox browser–>Tools–>Add-ons–>Extensions–>search for Firbug–>Install
Once you install firebug, you will see firebug icon in Firefox browser at top right corner (see in image bellow)
Firebug is Add-on to Firebug,Installation process is same like firebug.
Open Firefox browser –>Tools–>Add-ons–>Extensions–>search for Firpath–>Install
Once you install Firepath, Restart the Firefox browser, open any website any open Firbug.
In Firebug panel you can see Firpath , from where you can get readymade Xpath which you can use in script ahead.
XPath Checker is Addon to Firefox. Installation process is same like firebug
Open Firefox browser –>Tools–>Add-ons–>Extensions–>search for Xpath Checker–>Install
Once you install XPath Checker ,restart Firefox browser. Open any website in Firefox ,right click on any web element, you can see View xpath option, means Xpath checker is installed.
Click on it, xpath checker window will appear, where you can identify xpath manually.