The best type of manure for vegetables is compost. This is a mixture of plant material, including both organic and inorganic matter. Compost is made by mixing your kitchen waste with a small amount of sawdust or straw, then adding a handful of leaves, grass clippings and other organic matter. The whole mix is then left to rot over time.
If you use too much, you'll need to add more fertilizer later, but if you don't use enough, the plant will need to work harder at absorbing nutrients from the soil. A few shovelfuls should be plenty to get started.