Create a datadir folder for the eth node, e.g. blockchain-data, and cd into the folder
Run geth --datadir ..\blockchain-data --keystore %LocalAppData%\Ethereum\Keystore init .\geth\genesis.json
Create a new account using geth account new, then enter your password
Retrieve your account address using geth account list, example "929548598a3b93362c5aa2a24de190d18e657ae0"
Start local eth node using geth --datadir ..\blockchain-data --keystore %LocalAppData%\Ethereum\Keystore --mine --miner.etherbase "0x929548598a3b93362c5aa2a24de190d18e657ae0" --miner.threads 3
NOTE: Your node will start mining immediately, use geth attach and miner.stop() to stop mining while keeping the node alive.
Reproduce Steps
To reset the blockchain, remove the contents in datadir (geth folder).
You may also remove the contents in %LocalAppData%\Ethereum\Keystore for accounts removal.