Fire Magic is a great “entry level” way to get into spells for new practitioners because, well, candles. Most people enjoy candles and they’re easy to find these days in all sorts of colors and sizes. Candles make it really easy to do fire magic in a safe, confined way.
The main consideration with candles is whether you want to burn your candle to completion for the duration of your spell or meditation. You can buy small spell candles that last only a short time, so you don’t need to worry about leaving them unattended until they burn out. On the other hand, if you want to use a candle to help you commit to a focus or remind you of an intention, you might want something that lasts longer and lets you work over a period of time.
Keep in mind, though, that if you use a larger candle, you need to let it burn fully to the edges the first time you use it or it will tunnel down and be wasteful and eventually unusable.
If you can’t burn a candle where you live, you can use fire-colored crystals (or even yarn!) to connect you with the energies of fire.