Hi Ricky,
I go about a vocal track this way (If I was you I would just try a small file for a start - to get the hang of it.)
I sing maybe 3 or four times so I have 3 or four tracks to work with - I find (especially with me) that I don't sing the same every time.
I sing these in BiaB then I save them individually with different names i.e. michee1, michee2 etc ( by renaming the song)

I then import the wav files into a Daw program that allows better editing of wav files (I use MC5 but wish RealBand was easier)
Using the 1st and 2nd tracks, I highlight a word at a time and play/listen to them (I do this with all words - takes a long time but worth it)
I remove any horrible audible breathing noise from the words.
At the same time I listen for the best sounding word that fits with the song.
What I mean by that is, some words sound sweeter/grainier/harder/laid back/ whatever you decide- it's your choice.
Once I have decided on a particular word I then delete the other matching word on the other tracks that I have discarded and so on.
When I am finished I have four tracks with bits of words scattered throughout the song - try it it works.

When I am happy with the song vocals I then merge them into one track on their own.
There I can add any effect that I deem appropriate.

As to doubling the vocals I sometimes try the SlapBack Echo just to hear what sort of effect that has on the vocal then remove it.
Then I take the Vocal Files that I have discarded (remember I have saved them in BiaB) and add them all to the mix and try time shifting/pitch shifting etc...
This is how I do it but I am aware there are other ways to accomplish the same.
Best Regards
michee

Windows 11 64 bit, Biab 2024 1111, Realband 2024
i7 Desktop Computer 16Gb Memory