VMC is good and cheap. I use them for my spinners & spoons. They are made of Carbon Steel.
VMC makes hooks of Vanadium steel (Forged / tempered) & Hi Carbon steel. Depending on your purpose & strength you can take your pick. There is a big difference in Carbon steel & high carbon steel. High carbon steel is much stronger & more resistant to oxidation (corrosion) compared to carbon steel.
If anyone wants the VMC catalogue, drop me a line, I will email it to you. The file is 3.5Mb.
Some hoooks are galvanized (as Ken said tinned). Usually Galv of offshore metal is done to ASTM A123 (standard) to prevent corrosion. However, I'm not sure of what standard of Glav is done on the hooks. Example (Yo-zuri & some rapala lures, but not VMC hooks)
it would be best if you buy a variety of hooks of different sizes. You can test the lure in a tub of water, before & after changing the hooks. you will notice if there is any change in the lure (sinks / floats / how fast it sinks etc) & will help you decide what size of hooks would be best suited for your size of lure.
Any extra hooks can be used to make / experiment with different types of rigs.
Do not buy oversized hooks, but look at getting stronger hooks (3x / 4x). Nomatter what fish you are targetting, the hook strength also depends on the line / reel that you use. If you are not going to be using a very strong line line or even a reel with 20 - 30lb drag, you will not need very strong hooks as you will not be exerting as much force than can straighten hooks. Do NOT forget to use suitable split rings.
Barbless is easy. As ken said, press down the barb with pliers, or use a file.