Onboarding experience v0

[yangwao]

We will need to work out onboarding experience.
From freshly non-tech-savvy users you would take care for

• making that really weird questions
• creating answers to them, if have doubts, looking after others to help you with that
• take care of creating video tutorials (English native speaker required)
• explain how to install the extension
• how to do the first mint
• how to collect stuff
• what numbers can one see in the KodaDot
• explain all views we currently have - gallery, collections, item detail, collection detail
• explain data insights we have like - series-insight, spotlight kodadot/ideas#7 kodadot/ideas#16 &c
• admin function for mass mint
• how to make a mass airdrop
• potential future functionality

Happy to extend bounty if this would be good!

[damskyftw]

Tutorial on how to create polkadot js.wallet and add it to browser.

Watchable here

• can hear a bit noise in the background, but that i will solve with a little post-production work before uploading to Koda YT,for now i'd need overall feedback on the tutorial

I'd like to get green light and fast-forward this to KodaDot youtube channel and KodaDot wiki, for that i'll need access to both. @yangwao

This tutorial will also be part of #2064 and of course #1962

[yangwao]

This one is super old issue.
Good recheck with https://hello.kodadot.xyz what is already done there.