How many chicks to start with depends on what you are wanting in the long run. Do you want only layers, or are you looking to get a few meat birds as well? If you want only layers, it will then depend on the amount of space you have, and how large your family is, or how many eggs you'd like.
As a general rule, a laying chicken will produce an egg every 25 hours, so a flock of 3-4 chickens will give you roughly 3-4 eggs each day. This would be a good size flock for a small family, if you don't want alot of extra eggs coming out of your ears. If you have a larger family, or have people to give LOTS of eggs to, or you think you can sell off the extras you could get a slightly bigger flock.
Your coop will need one nestbox per 3-4 hens. This is good to keep in mind if you have limited space. If you want layers and a few meat birds, you could order your chicks 'St Run' or 'Straight Run' which means "as hatched". You will get a roughly 50/50 ratio of males and females this way, but the ratio drops with smaller numbers. You could raise them up and then send the males off to the freezer when they are large enough, which will be well before they start their crowing.
You do not need a male to get hens to lay. The only purposes of a male are to look fancy, make alot of noise, and make babies.
If you don't want or need these things, then you have no need for a male.