As a new starter you will be facing several problems ... 1. the sheer range of kit out there to choose from 2. the differing opinions and recommendations of vapers based on their experiences and 3. the learning curve that you personally need to climb.
The fact is that leaking is often (not always) down to user error and a common mistake is to move on from one piece of gear to the next and the next without really learning what your piece of kit is doing and how to get the best from it.
Many vapers, like me, have gone through (and wasted) quite a lot of money trying a lot of different kit to find out what works and how it works ... the way I vape today is different from 6, 12 and 18 months ago and I wouldn't have been able to predict the way the path would take me. It helps to have a positive attitude and an open mind, be prepared to learn from your mistakes, don't just throw money at your frustrations.