Hey!
I would use the furminator sparingly. It takes out dead hair (loose undercoat) and some guard hair.
There are other tools, just as effective, with much less damage to the coat.
I would do more research on brand, I would get several different width rakes and different amount of blades. Also a good slicker brush will help too!
Here are some I would use on my dog:
https://www.amazon.com/Master-Groom...839&sr=8-25&keywords=undercoat+brush+for+dogs
https://www.amazon.com/rake-deshedd...723&sr=8-14&keywords=undercoat+brush+for+dogs
https://www.amazon.com/Oster-Profes...qid=1498338684&sr=8-17&keywords=rake+for+dogs
https://www.amazon.com/PawsPamper-U...qid=1498338684&sr=8-11&keywords=rake+for+dogs
https://www.amazon.com/KONG-ZoomGro...1498338869&sr=8-3&keywords=rubber+curry+brush
https://www.amazon.com/Metal-Sheddi...8&qid=1498338886&sr=8-10&keywords=metal+curry
Get a high velocity Dryer!
https://www.amazon.com/Flying-Simpl...498338992&sr=8-6&keywords=high+velocity+dryer. This one is more expensive, but more powerful and would be quicker.
https://www.amazon.com/Flying-Pig-G...498338992&sr=8-5&keywords=high+velocity+dryer
Here is a good exmaple of a dog blowing her coat.
https://www.youtube.com/watch?v=HTg2LLh41z8 (Can you imagine how many hours it would take to brush and remove all this by hand?? Bad on their skin, on your arm/hand, etc)
Why to get HV dryer? It helps get the dead skin, hair, etc. away from the coat. Its less time going at their skin with tools. And its quite satisfying seeing the hair fly! LOL
Some dogs dont like the HV dryer, so go slowly with them. Start on low speed and work in the rear area. My dog hates the HV near her head, so I just avoid it and its not a problem.
So basically:
The best thing is a good bath, two shampoos. This means wet the fur completely, lather in shampoo and really scrub into the skin, do a half rinse job, the first shampoo helps lift up the dead skin cells and dirt, and loosen hair... Than add more shampoo, lather it in really well again. Rinse out really well, completely. This helps remove the dead skin cells and dirt. Do not leave in shampoo! Than use a high velocity dryer.. This will help blow out the dead skin cells, loose coat, fluff out, etc. You can see the skin well with this dryer too. Once the dog is about 95% dry, start using the tools above. Dry means dry coat! Make sure you look into techniques of drying it can go faster and be more efficient. The dryer the coat the more that will come out with the HV, and less work you have to do with tools and less potential damage to skin and coat. Make sure to clean ears with a antisepctic cleaner. I like the hexadene flush from Virbac.
The toe nails should be clipped every 4 weeks. I give my dog a bath every 6-8 weeks. She is a coated GSD, so her coat works different than a standard coat. Her hair does not fall out so nicely as a typical coat.
But as a dog groomer, this is basically my routine for GSD, husky, etc.
*Oh and careful of brush burn, its repetitive strokes on the skin. It can look like redness to the skin to really bad irritation that can lead to hot spots, etc. You can use the HV once in a while once the dog is dry, and go over the dog to be sure you are not causing any brush burn.