Hey Gus! Welcome to Quit Train! A place where all will welcome you as a fellow quitter and give you all the support you want. There's also a ton of information and videos here about quitting. This place can make a big difference to someone just starting out who's feeling a little lost.
First of all, quitting is an emotional experience, particularly in the early days so don't worry about that. It will settle soon enough. I too did not tell anyone in my family or my friends or coworkers I'd quit for some time. Don't know why. Probably so I wouldn't look like a fool if I caved in right away. I think that's pretty normal to have reservations about shouting out your intentions from the roof tops.
My recommendation to you is to have a look around this forum and use all the information to your advantage. Stay close to this place for support. Anyone can quit with a solid commitment and a little support along the way