Well me and some friends got togather 60 buck and decided to trip for the first time. we bought 5 grams. I only ate 1 gram and they ate 2 a piece.. and none of us felt anything! i was disapointed. so we proceeded to get stone .. and here i am now!
If you only ate one gram you shouldn't be surprised that you didn't feel anything. Try 3.5g and see what you think then.
I really don't know the whole "gram" system, I just take two mushrooms and I trip. Do it on an empty stomach, that always seems to help...and if in an hour you don't feel much just eat a bit more.
You should absolutely always, always know your dose. 3.5 can be pretty intense for some, I'd advise anywhere between 2.5 to 3.5.