There are a couple ways to melt it in the microwave or on the stove top in a double boiler
A marine receptacle head and shoulders better than what you can buy at auto parts store Item is of good quality

When the nicotine is heated, it becomes a vapour, which is then inhaled. Yach, who previously headed the World Health Organisations Tobacco Free Initiative, which was responsible for the first global treaty on tobacco control, said: [Electronic cigarettes are] something we are exploring within the Vitality programme [a wellness initiative that rewards members for getting healthier] since we know current approaches to get smokers off tobacco, including the use of nicotine replacement therapies, are simply not sufficiently effective. SA smokers have halved The governments tobacco control policy, which includes a ban on advertising, restricting smoking in public spaces and heavy taxing of tobacco products, has halved adult smoking over the past 20 years, according to the Human Sciences Research Council, which showed, in the South African National Health and Nutrition Examination Survey it published last month, that the percentage of adults in the country who smoke has dropped from 32% to 16.4%

making it easier to start, easier to continue, and quicker to get hooked, because it increases your nicotine exposure." Modeling studies show eliminating menthol cigarettes would result in 15% fewer smokers within 40 years, a drop resulting in between 324,000 and 654,000 fewer deaths during that time period
Some carts require you to hold a power button and inhale, others need a couple of presses of the button to turn the battery on so it's ready to go
2 and No