OOh!
Your question is straighforward but quite difficult.
Not knowing what your level of knowledge and skill is.Trading from home to an arcade attract different types of trader.
If you are going to trade shares I think you need level2 etc (not a share trader )hope someone comes along to advice you.
I trade forex from home for this I use
1 powerful desk-top connected 2 monitors
This is used for analysis and preparation etc
1 laptop with my trading accounts on them.and watching news etc
internet high speed cable
I use cmc and Alpari as my companies and get my software free from them.
Hope this info is helpful to you
Good Luck!