When the sale date is announced, they'll post borderline anally specific recommendations about what cards to use, how to set up an account prior to the sale, etc. Virtually everybody will ignore them and then complain because their card was rejected, they wasted time setting up an account and lost the chance to get a ticket, etc. Don't be that person, and do everything ahead of time.
Get in the waiting room early, I got in an hour or so before the last few presales and got in within 5 minutes, this is probably just a coincidence though, but it doesn't hurt. If you didn't jump on the pre-sale, I think you have to mentally prepare yourself to be flexible with either weekend. Last year, Weekend 1 sold out in like five minutes or something silly, and Weekend 2 sold out in a couple hours. I honestly think this year will be crazier regardless of the lineup, just because of the general trend the past several years. Good luck.