The attractively packaged, straightforward advice in “A Smart Girl’s Guide to the Internet” is just fine for boys, too, but … oh well, at least girls will benefit from it. (Is there a boys’ version of American Girl’s “smart girl’s guides”?) The guide has lots of what the publishing biz calls “entry points” – quizzes, bullet points, subheads, short sentences and chapters, and bright, colorful graphics. But the best part for a parent is that it’s written by mom, syndicated columnist, online-safety advocate, and PluggedInParent.com blogger Sharon Cindrich. Sharon delivers in the tech-parenting area. She knows the research (both the risk-prevention and social-media kinds), sticks to the facts, and provides a calm, rational voice in a subject area fraught with hype and misinformation. The book (96 pp., $9.95) is aimed at girls 9-12. Here’s its page at AmericanGirl.com.