I'll be happy to answer your questions, you need to see the tutorial here https://docs.qiblockchain.online/build-and-api/run-a-qi-blockchain-full-node

Computer Hardware and OS

Nodes can operate on common hardware because QI is such a lightweight protocol. Keep in mind that hardware requirements may alter as network demand grows.

CPU: Equivalent of 6 AWS vCPU
RAM: 8 GiB
Storage: 250GB
OS: Ubuntu 18.04/20.04