Compared to some bikes I've worked on recently, it's a dream.
First off, I heartily suggest a service manual, either paper or electronic.
The electronic one can be downloaded here:
The shims are the 9.48mm diameter type, in varying thicknesses of .025mm from Honda.
Read and understand the instructions, plus have the available tools handy.
I suggest doing the front cylinder first as that's where the most frustration will be due to space limitations. The rear cylinder is far easier and accessible.
Make sure the bike is clean and dry near the valve cover area, as any contamination that falls into the cam/valve area will damage the engine.
The cams are marked for position (front and rear, intake and exhaust) and for timing.
Make sure the correct cams goes back to it's proper location, along with its journal cap.
The gear drive cams make life very nice, since there's no drive chain or adjusters to fiddle with.