Let's say that, as an office worker, you're looking for someone in a different department that could help you with a project X. You go up to one of your colleagues and want to ask him whether he knows someone who could help you with this project (using the sentence structure "I was wondering __?" in your question).
Which of the following sentences is the correct one to use? (I'd appreciate it if you'd let me know about any better sentences)
I was wondering whether you know someone who can help me with this project?
I was wondering if you know someone who can help me with this project?
I was wondering who I can speak to to get help with project X from?
This final sentence doesn't sound right to me; but I'm not sure how I can improve it.