I would suggest going to the library and getting a few books on it. There are a few issues you need to consider when applying for a patent.
Is it a single patent or are there multiple patents for your invention?
How have you 'time stamped' it to verify it's conception later if needed? (Keep all your notes, preferably dated, concept ideas, sketches, dated conversations.)
How can you prove the 'uniqueness' or originality of your idea?
Is anyone else involved in the ideation? If so, how?
These are just the start, but a few good books will tell you how to implement the process to protect yourself.
Avoid the websites that offer to patent things for you. Most are scams. Legalzoom.com will provide forms for you but not legal advice. Thus the books tend to be better references.
Seriously, there may even be a "Patents for Dummies" book available as a good starting point.
If your idea(s) are truly original, and useful and/or cost cutting, then get the patent before considering venture capital.
Remeber, first and foremost, "Documentation is everything!"