It took me about 6 months to make the switch.
Don't worry too much about it doing both...just try and make little steps each day.... not smoking in car, not having one right after you eat, when you wake up,ect... baby steps can get you there.
Always keep an extra setup and juice with you, the worst is having your tank break and not having another one on you, or juice to fill it with.
Try not to buy too many starter items...Find your favorite juice and then start buying nicer tanks and mods, until you find what you like...A great tank and mod...to me was so worth it. Starter kits can really add up.
Spend as much time on here until you understand the Vape language!
If you have a good store near you...stop in and ask questions...you can learn a lot that way. My local store was the reason for my success!
I started vaping on 18mg and am still on it, and am actually down to one favorite juice...which saves me tons of money on tanks and coils. Buying new flavors all the time started to add up and in the long run I ended up throwing must of it out.
Anyway....hopes this helps some.