Adobe Premiere is pack full of lots of different effects and transitions, and with support for third party plug-ins, the possibilities are endless. With that said, Premiere has a nifty feature that can help you spend less time looking for your favorite effects.
The concept is actually quite simple: under the effects tab, right click the screen and select New Custom Bin. Name the bin whatever you like. We'll name ours Favorites.
Once you have created your custom bin, drag any of your favorite effects in! My personal favorites are Cross Dissolve, Exponential Fade, and Lumetri Color, but feel free to add any effects you find yourself using frequently.
Tagging on from our post yesterday about organization, which you can read about here, this is a great way to keep your work flow organized. You could even go as far to make custom bins for video effects, audio effects, etc. The sky is the limit with your options here.