Plugins for wordpress:

• contact form 7
  best form plugin for contact us page

• embedit pro
  one of the best plugin. It allows user to make shotcodes

• To change header on different pages of wordpress
  use a plugin named wp-display header

• To use page builder plugin
  install Black studio tiny mce widget

• Page builder by site orgin
  install the best plugin ever with which you can make pages / post customixed and apply your favourite design or choose a page template. For that you may also install site origin widget bundle

• woocommerce plugin
  best wordpress plugin for online shopping website
  after installing this plugin go to widget and select
  woocommerce price filter
  woocommerce top reated product
  woo commerce product catagory

• To change add to cart button in woocommerce
  install change woocommerce add to cart button text plugin
  after installing go to setting
  reading
  scroll down
  you will see installed plugin