你好！ and has both the meaning of 和 and 且。But in Chinese, there is difference between 和 and 且. 和usually connects two nouns or pronouns and they can change the sequence because they have the coordination relation. For example, A 和 B 去玩电脑游戏了( A and B go to play computer games; we can also say, B和A去玩电脑游戏了。They have the same sentence meaning， even though the sequence is changed). Here are some other examples,牛奶和咖啡（milk and coffee), 咖啡和牛奶 ；他和你，你和他。 且connects two phrases or sentences, and the second phrase or sentence is emphasized because it has progress. For example, A去玩电脑游戏了且B也过去玩了，（In this sentence, B is emphasized. Maybe B didn't finish his homework.) We should notice that A 去玩电脑游戏了 and B也去玩了 are sentences. 个人之见，仅供参考。不懂可追问。