First select the woo-commerce payment method from the Buddha Panel option.
Once you select the woocommerce payment, there will 2 new columns in the courses section.
Now you can add the woocommerce product that you need to link to the course as like the sensei plugin. Just add the products and you can link that product and the subscription level to the course.
For adding subscription level to a product you need to check this subscription checkbox which will show the subscription settings as shown in this screenshot http://prntscr.com/cy6248 . For having this subscription option in the product, you need to install the plugin “YITH WooCommerce Subscription”
By using this method, you can add the courses to cart and checkout using the woocommerce method.