If This Then That (IFTTT) is an service that allow you to link apps/devices and automate workflow. Sign up for a free account at https://ifttt.com/.
Access via the web or download the app for your device:
Services: Apps and Devices.
Applets: Methods of connecting services.
For example, IF you want to recieve a weather notification when you wake up, THEN allow IFTTT to do this for you. Once you turn on the Applet, customise it to meet your needs.
Choose the time you’ll recieve the notification.
Add ingredients to the receipe, e.g. temperature, wind speed.
Save the version you have created.
If you want to use an Applet that connects your apps and devices, you will need to sign into your accounts. e.g. IF you want your new YouTube uploads to be automatially posted to your Facebook Page, customise the Applet below.