Let's talk about contracts. A contract is essentially increasing leverage, amplifying your principal by a certain multiple. For example, if you open a 10u contract with x10 leverage, your position will be 100u. Some people wonder why adjusting leverage after opening a position doesn't change the liquidation, that's because no matter how you adjust the leverage, the size of your position was determined the moment you opened it, unless you add more to your position later. For beginners, I recommend opening only one cryptocurrency at a time, and it's crucial to set a stop loss when opening a position. Contracts are inherently about making profits from trends. If you open a short or long position in the right direction, you can reap multiplied profits. Similarly, if you open in the wrong direction, you may incur multiplied losses. The stop loss allows you to protect most of your principal even if you go the wrong way. If you are a beginner, make sure to set a stop loss when opening a position. If your direction is correct, you can gradually take profits during the upward movement and adjust the stop loss to a higher level, even setting your stop loss above your breakeven price. Once you become proficient through a series of operations like opening positions, closing part of your position, and keeping a base position, it will be hard not to make money. I also plan to do a free sharing and discussion on opening positions. I won't follow anyone's trades or manage trades, just a space for everyone to exchange ideas and discuss.