How to plant beans on your tiny balcony
buy the seeds, soil and pot from your trusted (and only in the area) gardening shop
reply "why not?" to their unjustifiable question ".. why beans?". What a stupid question...
express proudly the only two concepts you have learnt so far to show that you know a great deal about agriculture and then leave triumphantly offering them a share of the surely rich future harvest
then:
half-fill the pot with soil, put yesterday's food scraps for nutrients (it felt so right at the moment) and cover with the rest of the soil, sow the seeds 3 cm deep, cover the holes, place some bamboo sticks by the seeds.
And wait for several months before you can taste a surely great borlotti beans soup..
Next step: adding companion plants for protection against pests, in full on permaculture style baby!