There are many ways to give sats.

I guess the easiest way is using https://lightsats.com

Other good way is on Telegram using the @lightningtipbot

These two options are on Lightning Network and are custodial.

If you want to have a noncustodial option, you can send some sats onchain to any wallet like Electrum, Samourai or Sparrow. Or Phoenix on the lightning network.

Some people would suggest you to explain all about Bitcoin and others will said that the way to explain btc is letting others experience wallets...