ETF's/ETN's are dangerous...ESPECIALLY 3X ETF's, like UVXY, UGAZ, UWT, JNUG for example....SO they are for very experienced traders, if you are new to trading or have little experience, these type of ETF's/ETN's WILL BURN YOU BADLY! Paper trade on your own, practice and learn to become a solid trader before trying them some day.
To be really good at this game, you better have rules and SERIOUS discipline. It's always a work in progress, everyone can get better. Good luck to all!