The best advice I can offer you has nothing to do with WHERE you take LSD for your first time. Find someone who sells Xanex, or Valium, or Klonopin or any kind of Benzo...They will SAVE YOUR LIFE if shit gets 2 intense. I ate a 10 strip and about 4 hours into the trip started feeling really anxious after smoking a blunt to myself. I crushed up .5mg of Xanex and snorted it...I felt like a new man 5-10 minutes later. No anxiety, awesome visuals, it was a great time, but without that xanex...even an EXPERIENCED tripper can get rocked by acid.
Whoever said MDMA is like LSD is WAAAYY off balance. MDMA is a beginner psychedelic, it can be intense PHYSICALLY, but there is virtually NO mental craziness, just a warm feeling of happiness. Acid can change on you in a second, you can be having the best time in your life, and then a wave of intensity hits you, or you think some crazy thought that really detaches from your surroundings, or you smoke a joint for your 1st time on acid...A lot of variables can turn a fun trip into a frightening one. That being said...
I personally recommend that you take it AT HOME, with 1 or 2 GOOD, TRUSTWORTHY friends. My 1st time was very introspective and personal. I was in a group of 5 or 6 other people, but ended up spending most of the time by myself, mainly because I felt like I was going to miss out on some really important, life changing information if I let myself be distracted. Acid can be amazing, and scary at the same time. Raves can be A LOT of fun on doses, but there can also be way too much noise and over-stimulation of your senses. Just be careful and know what you're getting yourself into BEFORE you decide to take it.
And if you decide to be crazy and take MDMA and LSD together the 1st time. Only take like a half a hit of acid, and at most 1 roll, or .1 of Molly. These drugs have SO MUCH synergy that you don't need a lot of either. If you take them together...LESS IS MORE. No matter what you decide, make sure that you eat a good meal about an hour or 2 prior to taking your dose, this will help you to feel physically well for the duration of the trip. Not eating can leave you weak at the knees after a few hours of tripping, and it will be hard to get food down while tripping the 1st time.
Know your limits, be in a safe place, eat a good meal beforehand, have some good music to listen 2, and you're set. HAVE FUN!!