In your experience how long or the Length of Time Before You Learn All These Gambling Terms Or Jargon like wage, seed, provably fair, martingale, and so on.
In my understanding the word 'Jargon' is not appropriate in gambling, Jargon tends to be used more often in those that are technical in nature or more familiar with fields, professions and secret words such as military passwords etc.
The word 'term' may be appropriate in gambling, because the term contains meanings, such as: circumstances, processes, technology and science about gambling or the concept of betting.
From your two questions, of course gambling has risks, as long as you know the risks of making bets, it doesn't take long to learn the term gambling, you need to look at their reviews only and study carefully, be it legal or license they operate at once as I said above, the explanation of the Terms, reviews at least have a chance for you to learn gambling terms 70% before registering and betting.