Welcome!
Assuming you've already read the Code of Conduct, read on.
Please join our Discord - it's the best place to ask if you have any questions.
To start developing with Besu, you'll want to know how to build from source and be familiar with coding conventions, and how to run the tests locally.
There’s a few different ways to build and run Besu https://besu.hyperledger.org/public-networks/get-started/install
since The Merge, you need to run besu with a CL - see https://besu.hyperledger.org/public-networks/tutorials/besu-teku-mainnet - checkpoint sync is pretty quick
Note that doing a full sync will take days and take up TB of disk space. Checkpoint is a good option if testing locally. Some info on resource requirements https://besu.hyperledger.org/public-networks/get-started/system-requirements
Ready to contribute? Yay!