Welcome to TTF
Here would be my list of things to get
* A tank - This is what will hold the water (pretty obvious really)
* A hood - This sits on top of the tank and allows you to fit lighting. It's fairly common to find tanks that are sold with a hood included.
* A lighting ballast - This fits into your hood either partially or completely. It is what's used to supply power to you lights. Once again, this may be supplied with (or built in to) your hood.
* Light tube - This will allow you to see your fish and also allow you to grow plants. There are many specialist tubes available and the one you choose (and how many) will depend entirely on what you are
trying to achieve (Good plant growth, a flattering light for your fish or décor)
* A heater - This is used to regulate the temprature of the water in the aquarium.
* Tank stand - This one is very important. It is easy to underestimate the weight of a tank. 1 litre of water weighs approx. 1kg. A purpose built stand is usually the safest option, but failing that a piece of solid furniture which will not bend and buckle over time.
* A filter - This will 'clean' your water for you. The main function of a filter is not to stop it looking dirty, but to make sure things are right at a microscopic level. (Reading the topics on cycling will explain all this.) - There are many filters out there and each have their strength and weaknesses. Most people would agree that canister type filters are the most efficient, but they are also some of the most expensive. For smaller aquariums there are HOB (Hang on back) type filters or filters that sit completely within the aquarium. These often offer less options, but are significantly cheaper in most cases.
* Substrate - This will lie on the bottom of the aquarium and most commonly is either gravel or sand.
* A NEW bucket - This will be used for water changes and other maintainable tasks.
* Test kits - Most people seem to recommend the API master test kit. The test kit allows you to monitor your water perimeters and make sure everything is doing what it's supposed to be doing.
* Dechlorinator - This is to remove harmful chlorine and chloromine from your water, when you do a water change.
* Syphon tube - This is to help you perform your water changes. The better ones have a substrate cleaning attachment included.
* Fish food - Flakes, pellets, sinking tablets, live foods, algae wafters. There is lots of choice here. Which food you buy will be dependent on the fish you want to keep.
* A bottle of Ammonia - This is for your fishless cycle.
* Lastly and most importantly, patience. You'll need this in vast quantities in the early stages. Resisting the temptation of charging in, all guns blazing, is worth it in the long run.
There are other things that you will need or may want, but these can come later. I've probably missed something obvious off the list, but I'm sure someone will jump in once they spot it.
Kind regards
Jimi