If you need to find a buyers agent.
Start here:
http://naeba.org/find-buyer-agent
You still need to do your due diligence. There are good and bad buyers agents just like sellers agents.
They represent you. Their job is to get YOU the lowest price.
The seller's agent while being very nice to you, is responsible to get the most for the seller.
Start by interviewing them and getting a feel for how your personalities mesh.
Who pays them is negotiable. An exclusive agent will want to be the only one that completes the deal for you.
Just like with a seller's realtor you negotiate a commission. The seller pays a commission to the sellers agent.
When/if the seller's listing agent sells the house, he/she gets the whole commission.
If another agent sells the house, a predetermined amount is split between them.
With a buyers agent, if this amount is less than the amount that you negotiated with him/her, you make up the difference.
Unless you really don't have it in you to negotiate, you don't need a buyers broker.
Now my .02:
1. Set your budget, but be flexible, get pre-approved - an additional 25K isn't much more a month
2. Do your own leg work - Zillow (dot com)
3. Check out the neighborhood online - City-Data (dot com)
4. When looking at houses, try to find (casually) the sellers urgency or reason for selling (to be used later when making an offer)
4. Once you're serious and found a house - get an engineers report, and hire an appraiser.
*It will cost you around $500 or so, but could save you 1000's or stop you from a big mistake
*engineers report - should find major hidden damage and what needs repair
*appraisers report - will give you a legal value of the house, not what the seller or realor thinks it's worth
*also an appraiser can give a future value, in a declining market, you can use this to bargain the price down further
5. Use what you've learned and make an honest offer.