As a front-end developer you have to do lots of things that can be automated (minifying JS, compiling LESS, optimizing images, making sprites).
Gulp is great for this, but it still has a steep learning curve. Some basic setup is easy, but it took us quite a long time until it was reusable and solved all common tasks.
Just google "Phở" and I'm sure you'll find plenty of relevant sites containing documentation, code samples, and more. Oh wait...you'll actually get a bunch of sites about soup.