About vape pens and ecigs

About vape pens and ecigs

What is a vape pen and what types are there?
With so many models and accessories to choose from, starting with vape pens can get confusing quick.
What are open and closed vaping systems?
The main difference between vape devices is whether they're 'open system' or 'closed system'.
What is a vape mod or advanced personal vaporiser?
One of the most confusing things about vaping culture is the number of different options that are available.