Okay here are the stuff:
Reducing sugars (glucose)
take the suspected sample and add Benedict's solution into it, in a test tube or something, or in a beaker. Then heat the water gently with a Bb. If this happens:
Blue --> Blue
Then there is no reducing sugar present
If this happens:
Blue --> Brick red
Then there is reducing sugar present.
Starch
for starch you add iodine solution to the suspected sample
Brown --> Brown
This is a negative result
Brown --> Blue/black
This is a positive result
Protein
Protein is easy too =p all you do is use the biuret. If the sample is a solid, crush it, add it into a test tube or a beaker or something, add water to it, [if it's a liquid you're going to test then don't do what i mentioned previously] then add biuret solution into it. i don't know what's the colour for biuret... but it changes to blue/purple.
hope it helped. =D