Steem Power (SP) is locked and can not be transferred. (They can be powered down, but it takes time.)
Possible transfers are:
Steem > Steem
Steem > Steem Power
Steem Dollar > Steem Dollar

@resteembot accepts all three.

No need to be in a hurry to use the bot.
Just write posts, make some Steem Dollars and then come back.
You sound like you need a bit more experience with the platform anyway.
Experiment away.
(: