This offline setup does not require any accounts to created and does not require an internet connection once the setup is complete. This tutorial is based on the Offline C/C++ Development With The Micro:bit Using NetBeans article, (also see Getting Started with Offline C++ on the BBC Micro:Bit and BBC micro:bit Yotta for the setting up Yotta part), but it is modified to work with Netbeans 8.1.