NO, not really.
To give you an overview.
You have different competitions in which you can start, from dressage, show jumping, racing, cross cuntry, trail, raining, working equitation and so on, every horse has a certain potential in a certain competition which can be raised by training and breeding new foals which would have a higher potential, if you know what you are doing you can get quite good foals out of it.
To put it into perspective, every field of competition has different sub categories which you have to train to get competitive, for example for cross cuntry, which I am competing in you would have basics, tempo, power, endurance, dexterity and so on and every of these stats have a max value, when you train, your current level will increase till you have reached the max level of the current stat.
If you are good, you can train a horse to be proficient in multiple classes, or you can take a horse and breed a line of foals which have different classes than the game actually gives you as a starter or recommended ccompetitions.
Also, every horse has interior and exterior ratings telling you how good your horse looks and things like spirit, inteligence, awareness and so on.
You have to train and care for your horse, there is the possibility to let the game handle horse caring, but it costs extra stable rent per month, not real money, in game cash.
There is an extensive library in the game which is the internal help system.
When you haven't stabled your horses in a stable not supporting automatic cleaning and grooming, I suggest playing with google crome because you can hit the buttons to do that till you stable your horse, than you can play with every browser.
the accessibility is all right, there are some things to consider, but I can tell you more about that when you are interested in the game, it's not hard and it can be delt with.
The link for the game is
Hömma, willze watt von mir oder wie, weil wenn nich, dann lass dir mal sagen, laber mir kein Kottlett anne Wange und hömma, wo wir gerade dabei sind, dann iss hier hängen im Schacht, sonns klapp ich dir hier die Fingernägel auf links, datt kannze mir mal glaubn.