Growing on a balcony

Please can anyone give me any tips about any edible vegetables/herbs etc that I can grow in a pot? I live in a flat and I do not have a garden but I have a balcony, I really like to plant some edible things but I have never planted anything before and I do not know if it is possible without a garden.

A couple of tomato plants give a good return for space, they probably still got them in the garden centres. Rosemary, thyme and basil grow well if you like them, and some salad leaves in window boxes work well.

You can grow a fair variety of things. Depends on the balcony size and so the pot size.
Carrots and radish come easily to mind.
A trough with 3,4,5 lettuce in.
Tomatoes in a pot, a tumbling tomato could be an option (hanging basket?)
Peppers should be OK as well.
If you have a large pot, 48cm/18inch then potatoes are possible, suggest 3 in a pot that size.

Not sure about onions or leeks.
Would say that brussels and brocolli are too big for pots
Think there is a small variety of cauli that may be OK as well in a trough.
Seen celeraic in supermarkets, they may be a possibility, harvest when small.
Turnips can be harvested fairly small.

Pots need watering quite regular.

Herbs, tomatoes and lettuce do best for me. You need to be careful to keep the pots and baskets well watered though, and shelter from the wind might be needed.

Another thing to consider in addition to all the great practical points about water and wind, is weight - pots can be quite heavy once filled with wet compost, so be sure that a) your balcony will take the weight, and b) the pots are properly secured and cannot fall off onto poor unsuspecting passers-by (would be a terrible waste of veg) 

I have tried a bit balcony gardening a few years ago. Carrots, spring onion, garlic, beetroot, radish. I bought some great balcony boxes which now hang on my fence from IKEA like the Salvia range 

Just noticed they have planting bags in pink, blue and green too only 1.99 each