Yes, you're right. There is a learning curve to this.
Start slow and ask questions when needed.
'Zaps' is a term we call Bitcoin transactions that occur in a specific method over something called the Lightning Network. These are smaller pieces of Bitcoins we call Satoshis - or Sats for short - named after the creator of Bitcoin. Most Clients/Apps that use Nostr have the capability to send Sats to each other and we call them Zaps because it's an analogy to being struck by Lightning haha!
To begin using this asap, download a Lightning Wallet - we all use one called "Wallet of Satoshi". It's quite user friendly. Then link it to your Nostr account.
Here is a good resource for more info...