Starting PPC - Broad, Phrase and Exact Questions

Hey everyone,

I have been building an adwords campaign for CPA.

I have been working under a mentor, who has told me to bid on all the same keywords for "broad", "exact" and "phrase".

This is fine, but I have also been studying adwords myself. I have been reading up on "modified broad". I understand that with modified broad, all words in the keywords have to be included in the search term for my ad to appear, and also replaces the need for "phrase". Broad gives a more general selection of words, which has its benefits as it could uncover hidden gems, but as I have a limited starting budget it was my opinion that "modified broad" would be the way to go.

Has anyone got any experience with this? My mentor probably knows best and he says go with the 3 search types, but my gut tells me this might not be ideal and going with "exact" and "modified broad" will give me a fairly wide range of words anyway.

Any tips?

Thanks guys

I'm pretty far form a PPC expert, but I would think exact match is the safest way to go. Simply for the fact that you know exactly what you are getting when the visitor hits your site. This is especially important when you are selling a product or service because there are buying keywords and there are keywords that just get tire kickers.