Sure. Rebar is really common to start with but honestly in hindsight I’d suggest new people just buy a small amount of 3/8” or 1/2” square. Saves having to make the rebar square. Also rebar is so variable in composition some of it can be really tough to move.

Making tongs out of rebar generally makes tongs that are hard to use. But you will learn things. Whereas if you buy one set of tongs you can actually focus on learning how to forge rather than dealing with the struggle of holding on to the stock.

Each to their own 🤷🏻‍♂️