Hello :) From what I understand it depends on what you hope to get from the experience. Some are better suited to fun with friends times, and others are better if you're looking for healing/introspection/figuring stuff out.
One of the most important things to factor in, beyond the physicalities is your 'set and setting'. Set is basically where your head's at, and where it's been for say the last few days. Best not to be on a major downer/ have stuff going on that might bring you down because from what I understand, mushrooms will amplify your current headspace. That said, apparently some mushrooms are more forgiving than others and harder to have a hard time on. I think b plus is an example of this.
'Setting', is your physical environment - is it nice and clean and tidy, with nothing in it that might stress you out. Are you with people you trust and whose energy you vibe with.
With larger doses - say 2 grams and above, it's best to have a sober person with you, to help you out if you start having a bad time. Talk sense into your tripping head, give cuddles and reassurance, and if it's a really big dose and you actually lose touch with reality - to make sure you don't prove that you really can fly, or that you are actually an apple and want to peel yourself 😬😂
I can personally recommend The funguy and Dr shroom as vendors on here, doubtless there are many more, but I know the two I mentioned will tell you what you need to know. Also there are descriptions of the different types, what they're good for etc.
Also reading the reviews gives you a good idea. The best is placing an order and then reading the reviews and getting excited :)
I hope you have an excellent time. They are so totally bloody brilliant :) °☆
