Next year's Comic-Con in San Diego will be held July 19-22 with Preview Night on July 18. Based on the traffic this year, I may start my journey down the 5 Freeway some time around Halloween.
No, actually I just thought I should give you the dates and tell you that if you want to go, start thinking about it soon. This page will tell you a few of the basics. I hear from a lot of people who don't plan ahead. They miss all the opportunities to score badges, then they write me three weeks before the con and ask me how they get in. The answer is that they probably don't.
You don't have to start working on it now but don't miss the general badge sales. That's the easy way to do it. And also consider WonderCon Anaheim in 2018. It will be held March 23–25 at the Anaheim Convention Center. Also a very fine convention.