Martha,
I know that the "talk" can be scary and intimidating, but it's the relationship and the communication that is the most important part!! What you say is valuable to your child, but it's not nearly as important as showing them that you are there for them and they can come to you if they ever have a problem or a question. Just try to remember that YOU have to be brave and talk to your child so that THEY don't have to be scared to talk to you in the future! Brochures are a great idea, but use them to prepare yourself for your talk and go over them TOGETHER with your child, this will also facilitate the "talk" by creating a structure for the discussion and also allow both you AND your child to discuss some topics that may otherwise be awkward to bring up. I know it's tough, but remember that it's your child's life and their health that needs to be protected so it's worth it to just bite the bullet! I remember the few times my mom came to have "the talk" with me and it was terrible and miserable and awkward, but I think she's the best mom in the world and everything she said to me made a difference and has helped me many times in my adolescence and even in my adult relationships. You can do it! I hope this helps and feel free to come back if you have any other questions or if you need any help and support in getting prepared for your conversation.