Hello and Welcome!!
Be sure to read all the stuff in the articles section, it contains lots of valuable material. This can be a very challenging hobby because so much bad information is out there and a lot it comes from the people you would normally trust, such as the people who work at fish shops. But no one on here will make money off of you and we dont want to see you fail, so you can normally trust the advice on here. Research, research, research, especially before you buy. Its the best things you can do for yourself and your tank.