| Welcome to the forum!
I think you may be being too hard on yourself, and I am SURE that we can help you out. There are a lot of very knowledgeable people on this site and so you can ask any questions you may have and get either the direct answer you are looking for, or at least get pointed in the right direction.
So I take it that you have a fish tank already that you want to put some pirahnas in? If so, can you give us a detailed explaination of your set up and equipment?
If not, I would look for a bit larger aquarium for keeping pirahnas. They are by far best off being kept in a group of four or five and so most often, I have heard that 75 gallon long tank is in your best interest. You would also want to have a bit larger amount of filtration for your tank because these fish are messy eaters and a lot of waste is generated from the food as well as from the fish. Usually, a preditary fish like pirahnas are going to be higher waste producers.
So, until you can tell us a bit more about where you are right now as far as a set up and your knowledge on what you need to do or are confused about, I will wait so the information you are getting is more spacific. |