Web3 DApp database resides in Ethereum state and designing this database is quite different from web2 database.
Blockchain and web3 development resources are scattered, one stop list of all the quality resources on web3 and blockchain.
Python has number of packages which can be used to enhance shell scripts. It is easier to convert Shell scripts to Python.
We can install Jenkins in different ways but sometimes we just need Jenkins with minimal resources and configuration.
Crypto wallets are similar to one in your pocket. It consists of public and private key which are used in transaction signing and transfer.