Steven - Put the topsoil in your raised beds and then leave it a few days to settle. It's too early for sowing most plants yet as the days are too short so the seedlings will not have enough daylight to keep them sturdy and healthy. You might get away with sowing broad beans and sweet peas depending on where you live.
You could cover your beds with black plastic to warm them up so that when you do sow or plant, your babies will get away faster. In the mean time, get a good basic veg growing book such as the Dr Hessayon one, have a look at this almanac for ideas of when and what - http://www.thegardenersalmanac.co.uk/ Check out seed catalogues online and order some of what you fancy growing then arm yourself with seed trays and seed sowing compost and give it a go,