I take it you're referring to cichlids for a beginner?
What size tank do you have?
Are there any fish at all in it now?
How long has it been set up?
Your first concern is properly cycling the tank before adding the fish you plan to keep long term. If you don't, it can be very stressful on your fish and if it doesn't kill them now, it can do long term damage to internal organs.
Let's get the tank size and more info on what you want from the tank (colour, breeding, etc) and I'll try to help you get it back up and running again. :thumb: