Is your idea big? How much capital do you need? Venture capitalists are not usually the best, they will take up shares, involved in the management of the company.
Sometimes, the idea you have can only be conceptualized, re-designed, implemented and actualized by the person who initially came up with the idea.
If you have some capital on hand, I would suggest you first operate from a virtual/serviced office. This way you will test your idea without investing a lot of funds. A virtual/serviced office helps you reduce your capital expenditure and allowing you spread the small capital you have over a long period.
If your capital at hand is 500k, operate from a virtual office provider like VOS:
http://www.vosoffice.com and spread this capital over many months. You get the exact office space you require and avoid/reduce costs like; office lease, office partitioning or furnishing costs (over 300k), HR costs (no need to hire a receptionist (15k), cleaner (8k), e.t.c), a phone system (80k), fibre internet connection (15k), LAN (30k), computer system and networking hardware (100k), server (200k), and many more.
You get to allocate money for marketing and adverts, professional support for your business, ready IT systems, free internet access, and many more services.
I operate from a
serviced office, and it worked!!
All the best.