A few tips in general for the beginning of your exploration that'll help keep you sane:
Keep your expectations in check.
Lean to dilute/learn how to use a DIY calculator (e-Liquid Calculator -- what I use)
Mix small batches to keep from wasting materials.
Make sure you got what you need, materials wise, before you dive in head first.
Before you go bulk size on anything, try it out first.
Mix simple recipes before you get too complicated.
Write down, or log into a file, everything you do so you know what you did. Trust me, you won't remember once you got a bunch of bottles lying around.
Label, in some way, all your bottles.
Get to know the essence of each ingredient you use. Though some liquids may be labeled or named one way, their real-world use may be for purposes other than what the label would suggest.
More flavor does not necessarily mean more flavoring!
Some flavorings just suck!
Don't judge your mixes until you see how they transform, that is, unless you just want to be a shake-n-vape mixer -- which is fine.
Being creative is easy to do, but mastering creative techniques takes time.
Have fun.
Relax.
