No you can not add any phtml file in magento go, magento go has not access of any file structure.
Besides you can only change in your theme css or add js code in design configuration Miscellaneous Scripts option.
Pregunta
Is creating/adding new phtml is allowed in magento go? Please let me know as I am new to magento go.
Solución
No you can not add any phtml file in magento go, magento go has not access of any file structure.
Besides you can only change in your theme css or add js code in design configuration Miscellaneous Scripts option.