I'm asking you kindly for your opinions (or experience if you have any) on how you would go about starting from an idea to turning it into a reality and what steps to take initially?
What you've written here is way too vague, so I can only answer with vague/generic ideas.
* you may need to copyright the idea
* you may need to hire a lawyer
* you may need to create (maybe with that lawyer) a non-disclosure agreement everybody you involve in the project should sign
* you may need to find some advisers (that sign the NDA) and discuss with them; basically ask "second opinion" and find out if your idea is indeed good - here a couple of skilled friends or family may do it for free
* if you cannot implement that idea alone you may need to hire a team (which will sign the NDA); start building that project.
* if you cannot advertise your project you may need to hire advertise team (including bounty manager if you go here onto Bitcointalk); you will have to advertise the project. If you don't own the money and want to do something like an ICO you will have to do strong early advertising, else the advertising can wait until the project is in good shape, so the competition don't "steal" parts of your idea.
* you may need somebody to keep track of the expenses