Tweak

Cydia tweaks are downloadable packages that enhance your iOS experience. They can be fun, productive, or even fix bugs/complaints on a jailbroken Apple device. Tweaks are available via Cydia, the third-party store that hosts tweaks, themes, apps and more that are restricted by Apple. Tweaks can make your device have some customization, although there's a chance that an incompatible tweak may brick your iOS device.

Best Cydia tweaks
There are many tweaks out there and the huge number of tweaks, apps, packages... on Cydia really does confuse users. If you're new to Cydia, go to this collection to see the best cydia tweaks that you should install first. Then, once you're used to using Cydia, you can follow the jailbreak community on Reddit to keep up-to-date with new awesome jailbreak tweaks.