Buy yourself a hardware wallet and secure the seed safely. If you are a trader, spread a great aomunt of your tokens across various exchanges. If you are an ICO master, then its enough to use a hardware wallet and send tokens to exchanges when you are ready to dump (you dont even need to move tokens if using decentralized exchanges).
Developing a successful coin means building a product, protocol or service which would utilize the coin as much as possible.
First you or your partners would need to have a knowledge in developing classical web or mobile applications - frontend and backend, planning, design. Then, especially the backend knowledge should be upgraded with blockchain related expertise (Smart contracts, solitidy, protocol and nodes development etc.).
If you are not a developer, but a planner or strategist, you would need to analyze and research the existing projects. If you are planning an ICO funding, you would need to contribute to some ICOs first.
Lastly, most of standard web 2.0 projects do not need blockchain. So try to find projects which really utilize blockchain and understand why. Then think of where should the blockchain features solve real problems.
Looks neat. Firstly I would try to differentiate from Coinmarketcap and find some added value. I can see it in charts. But I miss something on the coins list - e.g. you could also display the 24hrs +/-%.
It could be done using your tokens as a security. This procedure would take more legal work and funds (at the start) to be compliant with monetary regulators. You will have some issues with listing your token on popular exchanges, because of security regulations.