If I was starting today from scratch, this is the advise I would give myself
-make decision for the first few to send it out to professional heat treat.
JTknives is a good one for send one at a time
-pick a steel that can be filed to final thickness before heat treating. Buy from a reputable source like Alpha Knife Supply, New Jersey Steel Barron, Pops, etc. I'd even get the precision ground variety that Alpha can do for many of their stock. Starting with something very flat makes things easier.
-pick design from an existing template, like a drop point or paring knife. Something that is known. Not too big, not too thick
-get some good high tension hack saw blades, hack saw for rough cutting profile
-get some good files in coarse, medium and fine.
-make a Gough style jig for hand filing
-don't bother with a 1" grinder from Home Depot.
-get some good sandpaper designed for metal at the 120, 220-400 or 600 level (Rhynowet), and good sandpaper designed for wood for the handle
-don't watch too many you tube videos. Either pick one and follow it all the way through or better yet, get a book and follow that. "How to Make Knives" by Barney and Loveless is a favorite because they show hand filing method.
-get some good drill bits in one 'size' bigger than the pin stock you pick. So if you have a 1/4" pin or Thong hole, buy a nice quality F drill bit
-buy or go to a friend's who has a decent drill press. This is the one power tool I think is worth having initially.
-get a good respirator, and safety glasses
-Use basic handle material like Micarta
-strive for some basic quality - symmetry, getting rid of deep scratches, but don't get obsessed with trying to be as good as others.
-finish it. all the way to sharpening, no matter what.
-if it is anything other than a kitchen knife, make a sheath too