> ## Documentation Index > Fetch the complete documentation index at: https://docs.near.org/llms.txt > Use this file to discover all available pages before exploring further. # Transactions > Learn how users interact with NEAR through transactions composed of actions, signed with private keys, and processed by the network with deterministic gas costs. Users interact with NEAR by creating transactions. Specifically, users use their account's [private keys](../accounts-contracts/access-keys) to sign transactions, which are then broadcasted and processed by the network. Transactions A transaction is composed of one or more [`Actions`](./transaction-anatomy), and each action costs a deterministic amount of [gas units](./gas). These gas units are translated into a cost in NEAR tokens, which the user must pay for the transaction to be processed. You can use an Explorer to inspect transactions in the NEAR network