Astro-Colibri is an application that alerts astronomers in real-time about astronomical transients like GRBs and supernovae. It is very useful if you wnt to get into the habit of being prepared to observe Gamma-Ray-Outbursts, e.g. as targets of opportunity while your observatory is ready doing other tasks.
Astro-Colibri can be used as a web-application, or, perhaps more useful when you want to be alerted in real-time, as a smart phone app for iOS and Android devices.
Interested? Check out : https://astro-colibri.herokuapp.com/
There are a ton of how-to videos on their Youtube channel as well.
This and other useful links can be found at: