1. Have you ever grown cannabis?
2. You need to plan on on at least 1 square foot per plant for the smallest plants When SOG growing. You will need for your equipment and working space. So figure at least 20% would be non used space. So an 8 X 8 foot room is 64 square foot minus 20% would be 51 plants. If you get 51 plants with a minimum of one oz of buds per plant and you are going to need a lot of odor control. I use a 6" Filter and Fan to clear the smell of 6 plants.
There is so much more to growing that planting seeds and lots of light. I would highly suggest you start with a manageable grow first to get your feet wet. The people who have experience recommend this for a reason.
And to be honest, your asking us to take the time to explain things to you when you don't even have a space to put one in. Spend some time on the forum and READ, watch and learn.
