Amunet

There's a plenty of topics to research as an aspiring witch, read about the history of witchcraft, types of witches, types of magic, divination, sigils and talismans, Study the Kabbalah and the hermetic laws. Also symbols, the elements, Energy, grounding, herbs and crystals, moonphases, astral projection, deites( for pagan witches)
READ READ READ, DON'T EVER THINK YOU KNOW IT ALL, we never stop learning, let things flow naturally and you'll find your path.. practice is the best way to learn. You don't have to spend tons of money on crystals to start your altar, your sacred space will gradually grow as you learn. For instance, Birthday candles or simple white candles work if you don't have the color you need for the ritual, it's all about the intention you set. You have magical spices and herbs in your kitchen! Diffuse basil for protection, lavender for relaxation, rosemary for cleansing..etc
But first ask yourself why you want to become a witch? Alot of us start at a young age having feelings of "knowing" things that others dont, intuition, Psychic phenomenon, clarviouancy
Are you having these feelings of paranormal intuition ? Or are you just attracted to the wiccan life/aesthetic
Do you feel like you were born into the craft?

Being a witch is a personal path, if its not doing you any good there's no point. If you bought a crystal for example and you think they're just rocks i suggest you don't waste your money anymore just for the aesthetic. It's all about believing in your power and what you're doing. You need to tap into your intuition, you'll feel a light from above is guiding your path. CONNECT WITH NATURE, meditate, practice yoga and connect with the ground, feel it beneath you. meditate with Amethyst to awaken your intuition and unlock your third eye chakra.Through these activities you'll let your body become known to you, you'll connect to your higher self, explore your abilities, strengthen your chakras and self confidence.
You can buy gemstones from costume jewellery shops or antique stores, there are stores for gemstones and crystals like Gazb if you're in cairo they're located in Heliopolis and they have an online store and ship worldwide, you can find a plenty of crystal stores on instagram.
Candles are easy to find i guess but you can find tea lights and scented candles at the body shop, bath and body works and fragrance stores.
Essential oils, herbs and leaves at spice shops.
Just start symple and things will come gradually.