Cheap and good in Canada is sidecut.com. The aforementioned Side Of Beast file guide is worth the money and better than any other angle guide I've used by a mile. Get a decent wax iron like a Toko T-8 or Swix T-77, both about $40-$70 depending on sales.
Get a good, cheap "most temperature" wax, and by that I mean a wax with a temp range that covers most of your normal conditions. For example, Dominator HX77 (turquoise) runs 5-20f and costs about $50/400g. Dominator Zoom covers 10-32f and is the same price.
There are good tuning videos on YouTube from Start Haus and Artech, and the Artech videos spend a good bit of time talking about setting up your tuning space. You can make a perfectly serviceable ski tuning ski holder with some ingeniuity and spare wood (google it) but a good vise will last a very long time, like decades.
If you have a shop you like and trust, have them tune your skis on the Montana. Ask to have your sidewalls race prepped. Make sure you know what your side bevel is. Buy a Side Of Beast with that bevel. Every day after you ski, run a medium diamond stone over your edges with the SOB. When that doesn't seem to bring back the sharpness, run a couple passes with a file (in the SOB) and again with the diamond. When that doesn't bring back the same sharpness, take them back to the shop for a tune, or really just get your edges done with a ceramic edger (TriOne, Montana Monty/Carrot, etc.). You'll probably find can get 10-15 days between trips to the shop if you touch them up every day if you aren't on super aggressive snow.
If you decide to go crazy and buy a ceramic edger, the Black Diamond Innovations unit that Sidecut sells is IMO best of breed.