Table Tennis Table
If you play at a club, they will supply the tables for you - after all, you'd hardly want to be bringing your own each time you play!
You may want to purchase your own ping-pong table for use at home, in which case there are a number of factors to consider. At the moment though, I'll just say to stick to full-sized tables rather than compact or minitables. Also, be aware that you will want enough space around the table to move around a bit and make a decent swing. Somewhere between 2 or 3 yards (or metres) on each side would be good. Much less than that and you run the risk of developing bad habits such as playing too close to the table or using cramped strokes. Of course, if you are only going to play for fun it doesn't really matter, but you never know when that competitive bug is going to bite you!
Interested in purchasing a table tennis table? 
Net
Good quality nets can be purchased without spending a fortune. I would recommend using a net that has screw-on clamps to attach each side to the table, although spring clamps can be OK provided they can grip the table firmly enough.
Make sure that the net can be tightened on each side (usually by a cord running through the top of the net), and that the tightening system will hold the cord firmly without slipping. There is nothing more aggravating than having a net that keeps coming loose.
One final thing to watch for - the net is supposed to be 15.25cm high. Don't forget to check that the net you are thinking of buying is the right height. Many of the better nets have adjustable posts to allow you to lower or raise the height of the net, which is handy. You don't want to spend too much time playing on a table with a lower or higher net if you are going to play serious table tennis later on - it's too easy to pick up bad habits.
Interested in purchasing a table tennis net?
Shoes and Clothing
For beginners, most reasonable quality tennis or squash shoes with a soft rubber sole will do a good job. You probably won't need a quality table tennis shoe (which are known for their lightness and flexibility, as well as their price!) until you have become more advanced. Sneakers can be allright but the ones with plastic soles can lack grip on dusty floors, and can be a little heavy as well.
As far as clothes are concerned, wear what is comfortable and easy to move around in. Keep your shorts above the knee since you will need to bend freely, and avoid wearing shirts with distracting logos, slogans or colours (such as a shirt covered in 40mm white circles, for instance!). A tracksuit to wear before and after matches is also a good idea.
Most competitive women wear shorts and shirts similar to that of the men, but skirts are perfectly acceptable. There is actually a bit of a trend starting among manufacturers to produce some feminine looking table tennis clothes for ladies, that are still comfortable to play in, so hopefully the choices in this area for females will improve in the future.
Locations
Having got all your equipment together, you now need to find somewhere to play. Besides at home or at work, you can also find places to play at many gymnasiums, recreation centres, or of course local ping-pong clubs.
Opponent
Finally, once everything else is in place, you need someone to play against! It might be your family at home in the games room, or your co-workers at lunch. Clubs are also great places to find fellow ping-pong lovers, and also can give you access to competitions and coaching.
Remember that it takes at least two people to play a game of table tennis, so always give your opponent a firm handshake and a sincere "thank you" for each match you play. After all, without an opponent, you wouldn't be having much fun, would you?
