Great advise from Maximo and Nancy 1999. Patience is key for sure. I wouldn't even worry about scissors just yet
. Start with small short sessions, (2 to 3 minutes, several times a day) when he is calm/tired out. Just run the brush over him lightly, with the back side of the brush, not the bristles. Let him smell it, get used to it, and learn that it is not an evil monster, teehee. Spread this out over a period of time, say a couple weeks, then brush one body part at a time, give him a reward if he holds still. Then let it go, go play for awhile, come back to it a couple hours later and do another leg, etc. Before you know it, you will be brushing his entire body, and it will become a bonding time for both of you.
Do this with each new grooming tool that you introduce.
Mine all l♥ve to be brushed and massaged now, but it did take patience/praise and rewards and consistency to get them used to it as puppies.