Try to learn vocabulary from Picture dictionary or when memorize something make a picture in your mind. I used to memorize vocabulary for my Scholastic Aptitude Test and for me this method is amazing :).

Many is used with count nouns: Count Nouns: (Machine/Machines, Car/Cars, Apple/Apples) Q: How many oranges are there? A: There are many oranges in the basket. Q: How many pencils are there? A: There are two pencils. Q: How many women are in this picture? A: There aren't any. There is only one man. Much is used with noncount nouns: Non-count Nouns: (traffic, fruit, machinery, information, furniture, money, time) Q: How much water is in the glass? A: It's almost full. There's a lot of water in the glass. Q: How much fruit is there? A: There's a lot of fruit.