Great to hear that! :)

It will take 5 minutes before it will post?

It will be posted instantly. The 5 minute is the cooldown where you can post another Steem post.

And am I supposed to put something in the permalink field?

If you want to have a custom permalink for your Steem post, if not, it will automatically be assigned based on the post slug. (Please note that you can't change the permalink once you have posted it on Steem blockchain)