There are as many tools as there are owners. Here are my favorites, take a look.:
I use brushes from Chris Christensen. My favorite is the 20mm Fusion, which is costly at around $50.
If you are just grooming one Briard, a lesser quality brush will do. Pin length of 20 - 27 mm is best.
I wouldn't be without my Resco #80 Coarse comb. Essential!
I can't count the number of these combs I've given away. I buy off the internet, whoever is cheapest.
I'm not picky about the brand, just a medium / coarse combo. Teflon coated is nice.
For removing old, dead coat.
You can groom on the floor, the bed, the couch... but a table is so much easier. A 42" length works well for most Briards. Shop online, or attend a dog show and buy from a vendor. Tables can range from $100 to $250 for a basic table.
You can spend $10 or $200+. Useful for trimming feet, cutting out matts, etc.
Thinning shears are great for between the eyes, and thinning the hair over the eyes.
It's handy to have on hand, with a detangling spray, such as Chris Christenson's Ice on Ice.
Some use plain water, some a light conditioner.
Essential! I prefer this style, much easier to see what you are doing.
And don't forget Quik Stop, or a simialr product in case you nick a vein when trimming nails.
Tools I don't use, but others have success with: