Wow what a question lol... Do you really think its possible to provide an answer to that on one thread? You may as well ask "please can you help me build a rocketship to go to the moon..."...
You really need to break your question down into much smalller parts.... and with that smaller tasks.... In fact if you think about it - you should first of all form a plan e.g.
Startup Phase:
1) Research and learn internet marketing. Read books, forums and websites which can help. Learn about SEO, PPC (and other ad platfoms), Social Media, Video Marketing, Email Marketing etc.
2) Research and learn about your niche. Your competition, suppliers and where to find potential suppliers.
3) Planning Phase:
Create a rolling plan for next 3-6 -12 months i.e.
- Identify website development tasks
- Identify IM tasks
- Identify recruitment tasks
4. Implementation: Begin with best efforts to follow plan
5. Review: Every week and month - review and amend plan...
Bottom line - no one is going to hold your hand do this for you... If you want to succeed online - then you need to have the courage to simply get on and do things!
Best of luck,
Sid