But I do not yet understand some things, I create a wallet in xapo and I have a Bitcoin address, but I do not understand how transactions go, it is instantaneous?
this information maybe answer you questions
https://bitcoin.org/en/how-it-works , yeah bitcoin transactions is instant
So if I understand correctly, there are no transaction limits? I can send 1satoshi if I want?
Yeah you can send bitcoin without limits. For send 1 sats i never try this, but in my opinion wallet services have a limit to send bitcoin, which will usually be more than 1 sats.
I would like to know if there are some ways to earn Bitcoins by doing some tasks, that's why I post in this section.
You can go to this section maybe
https://bitcointalk.org/index.php?board=212.0