One of the easiest crops to sow from seed and results are quick.  It is a great
source of Vitamin C for the whole family and is so versatile in so many dishes.

I love to grow both the Italian parsley and the Triple Curl Parsley, I have parsley
in pots and in many locations around my garden you can never have enough
parsley and it can be added to so many dishes.

Parsley is so easy grow directly in a pot or in the garden, simply loosen the
topsoil and sprinkle seedling mix over the top soil then sprinkle the seeds on
top of the seedling mix and water the seeds into the soil.
Growing
Germination is around 3 to 4 weeks, and it requires warm temperatures so a
warm room is advised in winter.
Parsley requires a good amount of light and will do best when receiving around
6 hours of sun a day but will tolerate partial shade. 
Parsley likes a well drained, moisture retaining soil.
If growing in containers ensure that it has adequate drainage holes and that they aren't blocked.
Ensure the soil does not dry out - water more frequently in summer.
After the first year parsley will start to produce seed at which point the plant is of no use for harvesting purposes.
Cut the outermost stalks just above ground level. This will encourage further growth.
Cutting near the top of the stalks will not encourage such vigorous regrowth.
Harvesting
You can harvest Parsley fresh - both the stalks and leaves can be eaten.
I like to keep a bunch of fresh parsley in a vase of water in the kitchen for handy retrieval