Newbie questions

Hi folks,

I've joined yesterday, and purchased some Yooshi.

I've transferred my Yooshi on the app wallet, and I see them increasing all the time.
Then I've seen stake and farm options.

I've staked my Yooshi, (it requires BNB for the same $ amount to do it) and the returns per day are pretty solid. (when I unstake I hope BNB and Yooshi will be there).

I am not sure how's going stake option and how much returns I will have there?
I suppose I should buy an NFT to stake on it… how that works?

At the end, it's more effective if I just hold the tokens on the wallet, or stake them with BNB ?

Thanks