There are two tried and true ways to germinate seeds.
Leave them in a shot glass half full of water. They should sink within 12-24 hours. Shortly after that you should see them crack open and they can be planted.
Alternatively, perhaps an easier method is to take moist paper towel, put the seeds on it and fold it in half, and then stick that in a ziplock bag. I usually don't seal mine all the way. Then leave it on top of something warm in a dark place for like 48 hours. They will likely be showing roots by then.
Sorry for the late reply. Thank you for the info that is very helpful. The seeds are just random ones, so I may consider buying from a shop.(We have HappyDayz in my town which is a cool place. Think he wanted around £20/£30. Is there a way of telling male from female seeds?