@Rock Gamer --> to play TE it's quite simple :
1) You can try the demo without ITST mod on
http://www.managames.com : you won't have access to the real courts, animations, outfits, grunts and stats of the real players like Djokovic, Federer, Nadal, Tsonga, etc.
Globaly speaking, the graphisms are also not optimized (basic menu, scoreboard etc).
2) You buy the game on managames (19 euros I think), you install the ITST mod and you enter in an other dimension of Tennis
Just to give an idea : in 2012 the TE tour counted 95 players ranked at the race. In 2013 we'll finish at 300 ranked players. What is fun is that you have access to the livescore of any matches played through the lobby of the game. So when you have big matches everyone is commentating the evolution of the scores on the chat, having debates about tennis or other stuff
But warning : the game at beginning is so different than TS4 that it requires an investment in time to figure out how it works. I advise to play with the helpers activated at beginning to really understand how to hit strong shots from baseline and service, because it's not that logical when you start the game.
Once you know playing a bit, just sign in the challengers tournaments which are dedicated to beginners. All the recent slam winners started with challengers, the best example is Richie who is n°1 with 2 slams in the pocket whereas one year ago he just started the game