Ditto...ditto....I do at least 99% of all the engraving I do with two gravers....a 90 degree square and a flat. Especially for a beginner, I would suggest that those two are all you need. And the very most important thing to master first is how to sharpen those two types of gravers. And then get a chasing hammer. You can certainly use a small ball peen or whatever, but there is a reason the hammers used by engravers for centuries are small, light, with a large diameter face and a thin "whippy" handle.
A while back I posted the following. The tools used by this 9 year old were very simple and, as you can see, he was doing a more than credible job of engraving.....and FAST !
On the subject of young engravers:
In 1978 I was a junior officer aboard a Navy destroyer on a western Pacific deployment. We had been in and out of the US Naval base at Subic Bay. One day as I was on the pier, there was a small boy with a little portable work bench doing something for a sailor from another ship. I walked over to see what was up and the lad was engraving brass belt buckles. He asked me if I wanted a buckle. I asked how long it would take... and he said about 20 minutes ! He had a small vice, a single square (obviously home made) graver, a sharpening stone, and a little hammer. This is what he engraved for me…..in about 20 minutes. He wanted $5……I gave him $20. He smiled a lot. I asked him how old he was. He was 9.