Self-staking is a process of locking up one’s own ETH in order to receive rewards in return. Liquid staking, on the other hand, involves pooling ETH with other users in order to receive rewards. The main difference between the two is that self-staking requires a minimum of 32 ETH, some technical knowledge, and maintaining validator up-time. With liquid staking, funds are pooled with other users and Hord maintains the validator and technical aspects.