It's not a good idea to store data such as name, height, weight on a blockchain. One of the reasons why you find a lot of tutorials that are coin-related is because transaction data is a good use case for blockchain technology. However, a blockchain is not a database.
The reason why name, height and weight aren't a good choice is that is it computationally expensive to ask every node on the Ethereum network to duplicate that data, so Ethereum transactions charge a 'gas' cost, which would mean you'd be paying in crypto to store your database edits.
Also, blockchains store the history of changes made to data, so you'd end up storing not just the height and weight now, but any subsequent edits also. In the case of weight, that might change a lot, meaning more transaction and storage costs.
Finally, it's probably not necessary that no-one tampers with this dataset. Is it valuable enough data to decentralise trust around it's access? I doubt that you'll run into censorship issues for instance which blockchain prevents.
So while it might be a useful tool for learning, some more context around how blockchains work would give you an insight into what use cases are suitable before you decide that Ethereum is the right blockchain for your requirements.