sometimes I feel like I'm a fullstackoverflow developer ^_^'

I don't feel the imposter syndrom anymore :)

Haven't been on here for quite a while.. mostly worked as a graphic designer from home the past year. End of 2021, I'll transfer to the RnD department at my job to become a developer and help out with the front end part (because you know.. I do design stuff). Ok No probs, I have done some basic stuff, jQuery and (god forbid) wordpress stuff, should work out. New boss tells me to learn VUE so that I become a Vue frontend developer aaaand.. I'm shitting my pants with imposter syndrom dribbled all over things.. sigh.. luckily it's the weekend so I can take a beer and think about my future. 🍻

Feeling the need to know everything about web dev (frontend for now) already yesterday, though not having a clue, what to look at first, as it's its own universe. Everything has a million ways of implementation, combination and features worth looking at.
Already have worked with basic HTML, CSS and JS, had a short look a Typescript, being confronted with React Typescript + Redux + thunk, SASS, learned some basics of all.
Feeling lack of motivation to build smth to learn, yet I want to explore. Afraid to get stuck in tutorial hell, although I know, changing smth here and there in the projects is a must for learning. Feeling the lack of understanding the bits and pieces of what can be styled with CSS in which way. Understanding how npm, webpack, the strange parts of JS, ES6, work.
So ... freaking ... much ....

How are you dealing with imposter syndrom and general self doubt?

More specifically on technical interviews, how do I know if what I am saying is reasonable and not just some gibberish of keywords I picked up over the years...