Hi
It really depends on the type of startup, but very generally speaking, you would need:
1. A One Pager and/or Pitch Deck (presentation).
2. To perfect your pitching skills (online).
3. An MVP (Minimal Viable Product) or at least a POC (proof of concept) to show some data/numbers.
As for actual funding channels, you have:
1. Friends and Family.
2. Crowd funding.
3. Angel investors.
4. VC firms.
5. Bootstrapping (funding yourself) - probably less relevant in this case.
6. Government grants (some countries, like Europe)
Good luck
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