Spcifically what type of information are you looking for. The basic steps are :
1) Determine your Wii Drive type, is it D2A/D2B, D2C, D2C2 or D2E. This is determined by serial number and date of purchase.
2) Purchase modchip based on above info. So if you wii is one that was before the D2C then you have option of WiiKey, D2pro9v2/v3 or Wasabi3, If its a D2C or later then you have choice of D2Pro9v2/v3 or Wasabi3. There are numerous other chips but these are the mos popular. Also if you are not good at soldering then purchase the chip presoldered to Wii-Clip
3) Once you recieve chip, open Wii and install it. test it while wii is open.