It's a never ending learning experience hey!
It takes 13 weeks (at time of writing) to fully power down all your SP into liquid STEEM - so you'll get 13 equal amounts each week converted from SP to STEEM.
As for getting Hive tokens, there will be a "snapshot" in the next day or two of your current STEEM holdings and you will get the equivalent amount of Hive tokens on Hive when it launches at the weekend.
If you want to move the STEEM tokens over to Hive then you'll need to exchange them - @blocktrades just made a post saying they will create a STEEM/HIVE instant exchange if you have liquid STEEM you want to convert.
Hope that helps 😀