Cloning is when you cut branches off a plant, and plant that branch, which will then form into a plant.

So say you have 5 plants, you can take 2 branches from each plant and have 10 clones, for a total of 15 plants.

Indoor grow room you firstly need lighting, something to put the plants in, some good soil unless your going hydro, and theres a lot of other stuff that you can get, but thats pretty much the basic equipment you really need.

I'm pretty sure theres no such thing as seeds that are male and female, or atleast no way to tell if a seed will be a female or male. But when you grow then you will find that there are male plants, and female plants. Males are bad and will produce no smokeable bud, females are what you wan't. Also males polinate the female plants which gives the buds a lot of unwanted seeds and reduces the THC levels.

Male and female are pretty easy to tell the difference. Just search for some pictures online, I'd post some but I don't have time. Basically male has small pods, and females get little hairs.

Hope that helps.