Proper Front-End -Development Environment SetUp?

I'm a longtime lurker but new user hoping to get a little help! I apologise if this has been posted before, but I have been searching and found no answers as yet!

I have been a Front-End Developer for a few years, but self taught and something that I've fallen out of the loop with is the proper setup for a front end development environment in terms of folder structure.

Is there a best practice for setting up a web dev environment?

If it helps, I will mostly be using Bootstrap.

If this question isn't specific enough please do let me know and I will try to elaborate more!

Thanks in advance for any help :)