Professional accreditation such as threat management certification is very attractive to individuals who work in the business world, or are interested in entering the business field. The certification training process teaches someone an important collection of skills, tools, and management techniques that are useful and real. and Good support and resistance levels for trading are very useful for traders. I think when a trader finds a good resistance level then a trader can sell on the other hand when the price is at a key support level then a trader can buy. So traders must learn about these support and resistance levels.