English Mastiff grooming--and in particular, maintaining these big dogs' coats--isn't difficult, but can be fairly time-consuming simply because of their size. The coats are short-haired, but they're double-layered, so they shed seasonally. Brushing with a bristle brush or grooming glove will need to happen twice a week or so for most of the year, but daily during the spring and fall shedding seasons. Some also like to use a shedding blade once or twice during these shedding periods. Luckily, the brushing process is easy: wet the coat with water mist from a spray bottle, then go through the coat section by section with the brush or glove, moving in the direction of hair growth.
Bathing isn't any more complicated than baths for other breeds, but again, it's more involved simply because there's more dog to clean! Unless your Mastiff gets especially dirty or stinky, though, baths are only necessary every 2-3 months. Be sure to use canine shampoo--and make sure you rinse the shampoo completely. Not doing both of these things can irritate the dog's skin.
Mastiffs' short coats aren't long enough to be styled, so haircuts aren't required.
And even though owners can easily learn all the Mastiff grooming needs on their own, it's good to take the dogs to a professional groomer at least once. The groomer can give your Mastiff a nice makeover, and provide tips on how to groom a Mastiff at home.
A few Mastiff grooming tools will also be required when maintaining these dogs' coats: a bristle brush or grooming glove (along with an optional shedding blade) and canine shampoo will all come in handy.