Hi Paris,
Congratulations on taking the first step!

I've worked in both consumer and enterprise startups in Silicon Valley the past 5 years and advised about 40 companies.

If I were you, I'd give this book a read:
http://theleanstartup.com/book

and then move onto:
https://steveblank.com/tools-and-blogs-for-entrepreneurs/

The biggest mistakes I see people with ideas looking to launch a company make are:
1) Not talking to customers early enough to solicit feedback
2) Worrying too much that someone will steal your idea
3) Not realizing that the idea is 1% and execution is 99%
4) Not starting small and building out from there. Build traction, build a story, and keep perfecting it.
5) And keep talking to your customers/users :)

Hope that's helpful. Feel free to schedule a call if you'd like to talk more.
Brian