Magento: Checkout redirects to cart before ‘Place Order’ is pressed (should go to payal)

In your admin go to System > Configuration > Shipping Settings, and then fill out all the details under Origin. This can affect the tax being applied to your location.

If you want to remove one step from the checkout process, you need to locate this variable:

$stepCodes = array('billing', 'shipping', 'shipping_method', 'payment', 'review');

So if you want to remove the billing process (for example), then your code should looks like this:

$stepCodes = array('shipping', 'shipping_method', 'payment', 'review');

The best way to do this is making a custom module, extend the Mage_Checkout_Block_Onepage class in this way:

class Vendor_ModuleName_Block_Onepage extends Mage_Checkout_Block_Onepage
{
    public function getSteps()
    {
        $steps = array();

        if (!$this->isCustomerLoggedIn()) {
            $steps['login'] = $this->getCheckout()->getStepData('login');
        }

        $stepCodes = array('shipping', 'shipping_method', 'payment', 'ddate', 'review');

        foreach ($stepCodes as $step) {
            $steps[$step] = $this->getCheckout()->getStepData($step);
        }
        return $steps;
    }
}

And save this on local folder with this structure:

local/vendor/module_name/Block/Onepage.php

I hope this helps.