Difficulty rating: easy-intermediate 
Suitable growing site: medium pots or in the ground under cover on a windowsill or greenhouse or balcony
Days from sowing to harvest: 120 days+
Risk of cross-pollination: yes - grow only one type of pepper or protect and hand pollinate
When to sow: sow as early as february indoors or under lights. Otherwise sow in march under glass.
Requirements:  rich soil and full sun 
Harvesting for eating: late summer 
Harvest for seed: when peppers are full and have reached their final colour (e.g. turning from green to red)
Some helpful video guides about peppers: here