Hi my friend!!
You will earn your first $leo (including the other rewards) 7 days after your post (be it comment, short post, blog post)
Then you will need to visit your wallet i.e. https://inleo.io/thelastdash/wallet/leo where you will be able to power up your new tokens!
https://inleo.io/katerinaramm/wallet/leo
You click on the little arrow, and you choose how many tokens you wish to power up !
After that click on power up and you are ready!
Please let me know if you have questions!