Your best bet on the paperwork, especially for your first time, is to get a flat fee attorney - we work with one in San Diego who helps our sellers with offers, disclosures, and throughout the escrow for ~$2000. Pretty easy and straightforward.
You can get contracts and disclosures through different websites (firsttuesday, uslegalforms), often for free. Keep in mind that if you are dealing with a REALTOR®, they may want to use their REALTOR® set of forms and that's fine - just let them know you will need the seller forms. The REALTOR® forms are setup to work with the rest of the forms in the REALTOR® set, so you typically don't want to mix and match the forms from other sets (firsttuesday, uslegalforms).
You may have a hard time finding a flat fee real estate agent that will give you the blank California Association of Realtors ("CAR") forms, as it's a violation of CAR intellectual property / terms of use, and the end user agreement of their software provider. CAR requires that if an agent provides the CAR forms for use in a sale, that agent must be providing full-service to either the buyer or seller.
Bottom line: your best bet is to get the flat fee MLS listing and wait and see where the buyer comes from. In the best case scenario, using a flat fee attorney where there is no buyer agent, you'll end up saving ~$30,000 in commissions for the typical Orange County home. Even if the buyer has an agent (we always recommend offering a fair commission on the MLS, ~2.5% in most cases), you'll still have a nice savings and be way ahead of the game.