This is an overview of how to do basic kintsugi. All of these steps have many more steps you need to master but since this is a quick guide I am including only the outline steps.
#1 Mix tonoko or flour with water till it is spongy but not too wet. Tonoko powder is available here .
A video showing how to do this step is available here, http://youtu.be/5T32GLJ3Yls
#2 Add lacquer to the flour/water or tonoko/water and mix it until it is evenly blended in.
This step is shown in the video linked to in the previous step.
#3 Apply the mixture to both sides of the broken piece and then fit the pieces together.
#4 Set the piece aside to dry. If you are using real lacquer you need to put it in a damp and warm place for about 7 days. For synthetic or cashew lacquer you need to let it dry for about 2 days.
#5 After the piece is dry clean up the material that has been squeezed out from between the edges.
This video shows a similar process. http://youtu.be/oXIEDLfz2Uo
#6 To get the smoothest finish you should apply a coat of lacquer over the repair line.
#7 Let the lacquer dry for 1 or 2 days.
#8 Sand down the middle lacquer till it is smooth.
#9 Apply lacquer to your seam, make it as thin as possible.
#10 Sprinkle whatever metal you are using onto your wet lacquer.
Here is a video showing the process, http://youtu.be/yLNwomQV3BE
#11 Put the piece aside to dry for at least 1-3 days.
#12 Gently dust away the excess metal.
#13 If you are using fine powder gold, brass, silver, aluminum, you are done. If you are using a coarser grind of gold then there are several more steps.
#14 The following steps are for coarse gold. Apply an overcoat of lacquer, let it sit for about 5 minutes, and then dab it completely away.
Here is a video showing the process, http://youtu.be/PU7c8rsMQ2g
#15 Put the piece aside to dry for 1 day.
#16 Apply a mixture of polishing stone and oil and rub till the surface is smooth. Here is a video showing the process, http://youtu.be/nRnPBY5h8N4