>>121312For the seeds, let it bloom and it will eventually fold up on itself and dry out. Once it gets dried out, snip the stem off and take it inside. Get a bowl and start freeing the seeds from it. The seeds will look like this.
My carrots last year got eaten off right when they started to go to seed. ;_;
FYI, Queen Anne's Lace (wild carrot) acts in the same manner and is also edible when very young. Where I live it blooms everywhere.