Trying to set up a hybrid web 3 social media/marketplace

I have emails but I’m trying to also add wallet connect and the ability to sell. I need help I’m getting stuck and could use a hand. If anyone could point me in the right direction it would be greatly appreciated. Tried to watch moralis video for clone open sea but when i run yarn in the beginning I get yarn : The term ‘yarn’ is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of
the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

  • yarn
  •   + CategoryInfo          : ObjectNotFound: (yarn:String) [], CommandNotFoundException
      + FullyQualifiedErrorId : CommandNotFoundException

You have to install yarn.

If you don’t have npm install npm.