Diy loft conversion?

Want to convert loft into room or storage space. will be widening loft entrance for some type of ladder and laying floor for starters(will get mate to set up a light and power supply socket) any websites out there or advice on flooring as i have heard that a room and storage in loft are different procedures
Answer
It is difficult, if you have little or no experience, the fllor should be strengthened, the normal joists are only to hang a ceiling on, not strong enough for footfall!