The same way my brother & I did. If you don't have much then you don't have much to lose. Stack sats in whatever amount you can. Use lolli & fold & fountain & shitpost on nostr for sats. Stack to a custodial lightning wallet until it's enough to move to something more secure.

Poor people also happen to be most likely to have bad habits, breaking some of those & buying Bitcoin instead can also go a long way.

Most underestimate the power of saving 50¢ or $1 a day. It's the repetition & consistency that matter more than anything.