Judging by some comments not that many people who are reading such posts do LSD. I wonder why. Done it myself many times and what's important to remember that there is Micro-dozing. if you are new to psychedelic drugs then just start with a small doze(not the full tab if you do not know exactly how much it has) and preferably do it within a save environment with a friend who you trust, then I can personally assure you that chances of having a bad trip are close to the absolute 0.
I also want to point out an important thing. The more knowledge you have the better LSD will work on you. Music and nature are always fine on LSD, however that's not the only thing it is useful for )
If you're doing real micro-doses, you do not feel the effects. I would also recommend that if you don't know what the dose of the tab is, don't buy it. If they aren't gonna tell you the dose, it's probably an impostor or a bunk tab.