LSD is actually somewhat like shrooms. The difference is that LSD gives you a much more stable high..extended over a 4-6+ hour period.. shrooms are much more unstable.. you often daze in and out (i do anyway) of your high... with LSD.. you're high.. and you know it.

As for over doing it the first time? you probably won't if you're smart about it. do 1 tab.. maybe 2 depending on age/weight/height and what not.. go with what you're comfortable with. and remember to stay happy .

Bad trips can be caused by a lot of things.. if shit is happening in your life.. and you're doing LSD to ...urm.. wash away your worries.. that's a bad idea.

Don't do LSD to drown your sorrow.
Do it to have fun. But remember to be safe...best to have someone around for that.. just in case.. situation
P.s. my buddy has done well over 300 hits of acid over the course of his later teenage years..

he's fine