If you are playing badminton for fun, you can easily purchase a badminton set from either a supermarket or a large sports store. In some places, you can find badminton set sold in a hardware store or even a pharmacy. There are certain sets which are nicely packed together in a carrying case with a zip. These usually consist of everything you need in a badminton set and do not cost much but they are basically quite useless and can easily hurt your wrist. It is best to get medium cost rackets. You may need to purchase several packs of shuttlecocks as the feathers can easily be damaged or perhaps you can use the plastic types which are more durable. Lastly, a badminton bag would be helpful and handy to carry your badminton set around.
As for purchasing a badminton set for competitions or tournaments, it is advisable to obtain advice from badminton centers or refer to the sports specialist as to which set is appropriate. You can also consider purchasing the equipments online using search engine. The rackets used for competitions are usually of a higher quality than those used for fun and therefore the cost is heftier. You will need a minimum of at least two rackets just in case if the strings were to snap in the racket which you are using.
As for the shuttles, you will require at least two packs of the feathered ones. Get the high quality types of shuttlecocks which are packed separately. There are also synthetic nylon plastic types that can withstand the forceful hitting and last longer but ensure that the heads are made of cork and not plastic. Where the net is concerned, it is usually provided by the badminton courts, both indoor and outdoor. If you need to purchase a net, then look for nets with metallic poles. Also check for an all-weather net that can withstand both sun and rain if you intend to play on an outdoor court.