A few days ago I posted about my first experiences with Sentinel-2A data. Since then, I came across a post in the Geoscience and Remote Sensing Facebook group for a video of how to download and process individual Sentinel-2A granules using the free and open-source QGIS.
First and foremost, you’ll need to get two plugins from within QGIS- the OpenLayers plugin, and the Semi-Automatic Classification plugin (SCP), the latter written by Luca Congedo. You’ll then need to restart QGIS to use both plugins. You will also have to be registered with the Sentinels Scientific Data Hub, as you’ll be using your username and password in the SCP plugins.
After that, follow the instructions in the video. Be aware that downloads can take a while.