You can buy peer to peer or if you want to stack "free" sats you started in a good place with stacker news. Create good content and people will tip you. You can also listen to podcasts on Fountain app, play games on Zebedee, Thndr, there are a number of other apps that have daily sats giveaways. I am sure other responses have covered all these.

If you have a skill set that you think you can market maybe you could offer to work for sats. Even if that skill set is merely youthful energy. You can probably find someone who will pay you sats to mow their lawn, shovel their snow, clean their gutters, paint a fence and so on. Maybe try the Orange Pill App to find bitcoiners in your area and see if any of them have some work for you.

Happy stacking.

Cheers, GR