Cardano is a blockchain platform with more advanced features than any protocol yet developed, and the first to evolve out of a scientific philosophy. Completely open source and patent-free, Cardano was built in a spirit of collaboration. And engineered for efficiency and scalability, the Cardano ecosystem is developing out into the most complete and most useful cryptocurrency ever constructed.

A stake pool is a reliable server node that focuses on maintenance and holds the combined stake of various stakeholders in a single entity. Stake pools are responsible for processing transactions and producing new blocks and are at the core of Ouroboros, the Cardano proof-of-stake protocol

Pledging is an important mechanism that encourages the growth of a healthy ecosystem within the Cardano blockchain. When you register a stake pool you can choose to pledge some, or all, of your ada to the pool, to make it more attractive to people that want to delegate. Although pledging is not required when setting up a stake pool, it can make the stake pool more attractive to delegators, as the higher the amount of ada that is pledged, the higher the rewards that will be paid out.

One thing to mention as it discussed in different pools and communities that the more pledge the
more dedicated is the pool owners, it really important to understand that geographic territory of the people involved make big differences. As an example, people in third countries, ordinary people like us, could not easily have the same pledge in their pool with people in developed countries as you can understand the quality of life regarding the economic factor and so on is really beyond comparison.

A cryptocurrency wallet is a software program, online platform or a hardware device that holds the keys you use to send and receive various blockchain cryptocurrency tokens. It literally stores your ‘private’ keys and your ‘public’ keys – the secure way wallets communicate with blockchain cryptocurrency ledgers.

Delegation is the process by which ada holders delegate the stake associated with their ada to a stake pool. It allows ada holders that do not have the skills or desire to run a node to participate in the network and be rewarded in proportion to the amount of stake delegated.

Fees are constructed around two constants (a and b). The formula for calculating minimal fees for a transaction (tx) is a * size(tx) + b, where: a/b are protocol parameters size(tx) is the transaction size in bytes.