Simplify language. Think of zaps as tips. Nostriches tip or pay for content. For example, if I come across a meme that makes me laugh, I zap the person cause it’s a great way to start the day. 

A zap is a bitcoin payment through the lightning network. You will need to link a lightning wallet such as wallet of Satoshi in your profile to send and receive zaps. If not a bitcoiner, sats is short for satoshis which is a fraction of a bitcoin. You’ll soon see how easy and fast it is to use but if all this is new, I’d suggest looking for some videos and explainers and do a little research. I’d recommend doing the research yourself. Always ask questions but you need to personally do the learning curve. 

Relays. Look up nostr.wine and nostr plebs. A good start. 

Have a fantastic discovery journey!