I mean, to sends zaps, what is the easiest way to transfer them and from where outside of lightning?
Discussion
There are exchanges, like Kraken.com , which let you a) buy bitcoin for your countries currency and b) withdraw your Bitcoin over the Lightning network. You can send them directly to your Alby wallet if you want to.
I'd personally recommended to start by setting up a custodial wallet like WoS or Alby. Once you have that you can start receiving and recirculating sats. That should buy you some time while you figure out how to move funds from on-chain to the LN.
You can also use some p2p exchanges like robosats to buy sats directly into the LN. But I'd recommended to become familiar with the LN first