Project Recommendations

Hi,

I am thinking of starting a project to learn some skills of the web3 world. Completely new to this world, I have gone through most of the cryptozombies lesson on solidity while also trying to understand the overall concepts of Blockchain/Web3, what major projects are doing etc etc...

The project will basically be a way to truly enable digitally signing and reliably storing important documents. As of now I see this being used by corporates/ governments etc (Yeah I overstretched by adding govt). Docs like contracts, agreements, bills etc

Thinking of using Ethereum + Filecoin, since I am targeting security over other features. It might be better to go with something like Hyperledger, but I am thinking this should be compatible with multiple chains anyway to provide different options for users based on the need of security, performance, gas fees etc. So I will be starting off with Ethereum.

Please let me know if you see any implications and problems ahead. My major objective of posting this is to have a brainstorm of potential issues I might face in future. Also get some help in moving forward with the project. What I should learn? What I should know before starting of etc etc?
Also are there other subReddits which are more apt for these kind of questions?
Any comment is appreciated.

Thanks