To launch a 'buy X get Y free' promo with the Special Promotions Pro extension, you need to create a relevant Cart Price rule, set up a discount, choose 2 in the Discount Qty step and apply the rule to a product you need . See all the settings in the full guide.

If you don't know how to set up the promo 'Fixed amount discount for whole cart', please follow the instructions:
 
Conditions: None.
Actions: At the screenshot below you can see how to set up 10$ discount for the whole shopping cart.
 ...

The guidance below explains how to set up the action ‘All products after N for Fixed Price’ of Special Promotions extension.
With this action you can create promotions like ‘Buy 4 products for full price and get each additional pro...

The guidance below explains how to set up the action ‘All products after N with Fixed Discount’ of Special Promotions extension.
All products after N with Discount’ action works on analogy with ‘All products after N for Fixed...

The guidance below explains how to set up the action ‘All products after N with Percent Discount’ of Special Promotions extension.
All products after N with Discount’ action works on analogy with ‘All products after N for Fix...

With the use of the Special Promotions extension, you can launch a 'buy X get Y with fixed discount' promo. The feature permits specifying individual products (not only categories) for which the condition will be applied. To see a full guide, follow the link below.

With the use of advanced Special Promotions discount rules, you can predetermine a fixed discount for a product instead of a percent one. By this rule, if a customer orders three printers, he/she can buy any laptop for $200 only. To see more details on the configuration, see the complete answer. 

The extension allows for creating such promos as 'buy X get Y with N% discount'. By setting up the 'Actions' you can define a percent benefit your customer will get in case he/she meets the conditions. To see all the configuration steps, go on reading a complete answer.

The guidance below shows how to configure the action ‘Fixed Price: Each 5 items for $50’ of Special Promotions extension.
This action allows creating promotions like “Get group of special items for 150$”.
 
Let’s...

The special offer permits providing your customers with a percent discount in case he/she buys a specific number of products. For the promo launch, you need to create a cart price rule with the corresponding actions, specify the quantity step and a discount amount. Go on reading to use bit-by-bit instructions.

The guidance below explains how to set up the rule ‘Fixed Discount: each 3-d, 6-th, 9-th with $15 off ’ of Special Promotions extension.
With this rule you can create promotions like
‘Each second (third, fourth, etc.) item $50 (10...

The guidance below shows how to configure the action ‘Fixed Price: each 5th, 10th, 15th for $49’ of Special Promotions extension.
The action lets you discount price of products to a fixed value (considering that the item meets the condit...

The guide below explains how to set up the rule ‘Percent Discount: each 2-d, 4-th, 6-th with 15% off’ of Special Promotions extension.
With this rule you can create promotions like
‘Each second (third, fourth, etc.) item for 50% o...

Thanks to this action you can create various effective promotions like ‘Buy 3 books for full price and get each second one with $20 discount’. Read on to see all the configuration steps.

With the use of the action, products are discounted to a fixed amount. You can create promotions like ‘Buy 3 books for full price and get each second one for $20 only’. Go on reading to see all the settings.

Thanks to this action you can create promotions like ‘Buy 3 books for full price and get each second one with 15% discount’. Continue reading to see how to make all the settings correctly. 

The guidance below explains how to set up the action ‘Get discount for each amount spent’ of Special Promotions extension.
This action allows creating promotions like ‘Get $5 discount for each $250 spent’.
 
Let’...

The guidance below explains how to set up the action ‘Fixed Price for a Product Set’ of Special Promotions extension.
This action enables you offer a fixed price for a particular product set.
 
Let’s observe the steps of the...

The guidance below explains how to set up the action ‘Percent discount for product set’ of Special Promotions extension.
This action enables you to offer a percent discount for a particular product set.
 
Let’s observe the s...

The guidance below explains how the rule ‘The Most Expensive’ of Special Promotions works.
This rule may be advertised as
-  ‘Buy 3 and get the most expensive product for half the price’,
-  ‘Buy 6 get 2 the...

Please, log in to your account and download the latest extension version....

If you use Product Promotions extension and can't set up a percentage off only defined products and only when a buyer ordered more then a specified number of items, please, perform the following instructions.
Open Promotions→Shopping Cart Price...

Please, copy discount template to your custom theme from the default location:
app\design\frontend\default\default\template\amrules\checkout\discount.phtml
Do not forget to refresh the cache....

Please, add the lineMage::dispatchEvent('adminhtml_block_salesrule_actions_prepareform', array('form' => $form)); right before the line$form->setValues($model->getData()); in the fileapp\code\core\Mage\Adminhtml\Block\Promo\Quote\Edit\Tab\Ac...

Special Promotions and Special Promotions Pro extensions require validation by category for associated simple products.
 
It means that when you create a new rule, using any of our promotion extensions with condition based on "category", it is...

If you can find some product attribute, like SKU or Manufacturer, in the conditions dropdown please, open admin > catalog > attributes > manage attributes > SKU, and set "Yes" for "Used for Promo Rules Conditions" option.
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