# Fundamentals

Understanding the fundamental concepts of Arweave and the Permaweb is essential for building robust decentralized applications.

# Identity and authentication

• Wallets & Keys

# Transactions

• Transactions
  • Posting Transactions
  • Bundles
  • Transaction Types

# Accessing Arweave Data

• Accessing Arweave Data
  • Data Retrieval Methods
  • Manifests & Path Resolution - How files and applications are organized
  • Querying & GraphQL - How to find and retrieve data
  • Gateways & Access - How to access the network
  • Arweave Name System (ArNS)

# Decentralized Computing

• Decentralized Computing