There are some really nice cleaning tutorials on here to help you.
I use TR3 Resin Glaze or Meguire's Cleaner Wax on cotton balls for getting the grunge off of the decals and I soak all the plated metal parts (including feet/attachments) overnight in Evaporust then polish the metal with Flitz or whatever I have handy for that. Then I put a coat or two of Meguire's Wax (the one with no cleaner in it) over the whole surface to keep it clean.
Have fun with it - I know it's going to have a place of honor.
