papa smoke,
1. yes
2. reading and research and possibly more questions
3. for your first time, something simple. Maybe a self ballasted light fixture. MH for veg and HPS for flower
4. get them online through google shopping. sunlightsupply.com and hydrofarm.com manufacture many different light fixtures and have retailers near you.
5. the size of the bulb and reflector you buy determines how many plants you can place under it. if you only want 3-5, you want something that can cover that space that they will take up. anything will probably do it. But you want something roughly like a square meter or more of coverage. 600w would probably do it.
6. how long it takes you will depend on how much research you do. generally plants will finish flowering in 9-12 weeks depending on the strain. some people stack another month ontop of that for the veg period, some less. Good luck.