Good luck to you. Most people on this forum are helpful and have knowledge. But some of these people who have this knowledge push too far and can be rude if you did'nt go about doing things the way that they think is best. They have the right to give an opinion and try to help with advise, but should not go about it by being rude just because u did'nt do your research first; even if that rude person is right or not.
Im still learning myself and some would not recommened the fish combo i have. I will sometimes start a thread asking a question about a fish or a sickness; And someone will randomly write back saying this fish does'nt belong with that fish, without answering my question in the first place. Some of these people have the best of intensions, just given friendly advise thinking i may or may not no better. And some of these people can be too critical.
Some of these critical people take it too personal about how u are takin care of fish. The best thing these people can do is give friendly advise. If the critical people think people are not following advise they think should be used, Then give up on them and help the next person. Being rude and too critical will not help anybody on this forum, only drive them away.
And for the most rude and critical peolple, get a life. Yes people should take the best care of fish the most knowledgeable way they can. And you should not intenstionaly put fish in a bad situation. But come on fish are not people, don't treat people like they commited a crime because they were not prepared or knowledgeable enough when they first started keeping fish.