some important and useful collocation that I learned from class

Useful collocations while trying to describe or highlight issues or problems, explaining app functionality, giving tutorials etc. For example: "Common sense will tell you what...", "This one should be pretty self explanatory" or "Nice idea, if only there was..."

Short phrases / expressions used on social media.

We need to learn phrases- lexical chunks to be a native-like speaker. I wanna share useful phrases with you all.