. Block Height is very important because, you can use it in tracking the progress of a Bitcoin transaction on the BlockChain. Once a Bitcoin transaction is confirmed it will show the block number were it was recorded, you can use it to track your Bitcoin, because it tells which block the transaction was add to.
Example
Block: 833,520
Block height are not technically used to track Bitcoin transactions progress but to see which block the transaction belongs. It's a transaction hash or transaction ID that is used to track the progress of a transaction if it's confirmed and included in a block.
Output / Input.
Output and input input tells you the address that provides the Bitcoin that is been spent and the receiving address.inputs specify where the Bitcoin is going this is the sender and the destination which receives the the Bitcoin is the output.
Example.
Input 1
Address: bc1abc...
Amount: 0.50 BTC
Output 1
Address: bc1xyz...
Amount: 0.30 BTC.
Use punctuation mark where necessary, you know it but the English is confusing.
In a new transaction, the input is the source where the Bitcoin was lock from the previous transaction and the output tells you the Bitcoin destination on another new address(pubkey or pubkeyhash).
You can also use the Transaction fee and size in checking your Bitcoin transaction .
This is wrong, you can't use transaction fee and size to check Bitcoin transaction.
You can use the transaction size to estimate the transactions fee, the things that determine your transaction fees are the type of wallet address both the sender and receiver, transactions that involve Segwit will have less transaction fee than legacy and the number of inputs and outputs in the transaction.