At what point (age or developmental stage) can a child reasonably be expected to use a fork or spoon? I'm asking mostly about physical ability to control the fork/spoon mostly enough to use the utensil independently (put the food on and get it to the mouth).
We had ours using the plastic angled spoons and forks from just after a year. Initially this is a very messy game to play, but letting them start early helps them pick up this essential skill quickly.
This will work best with yoghurts, cereal, mashed up foods in sauce etc, but we found they also enjoyed trying to pick up spaghetti with a fork (not short bits - full length strands :-)
Using a knife successfully comes a lot later - I seem to remember them all being over three years old before they got this sorted fully.