If you look few posts above you'll see I've already said it. Is somewhere around 5.75% a year (more or less, depending on the pool you choose to delegate your coins), not something you''ll get rich with but is better than nothing like it was before Shelly. I don't know what is the minimum amount to delegate to a pool, but I assume is 1 ADA, which is not worth the pain to delegate it, if you ask me.