I've been practicing on and off for about 10 years, and my biggest piece of advice is to start small. Like, smaller than you think you should. There's a lot of information out there and taking it in all at once and applying it all at once will burn you out! Try out a couple things, and if they don't resonate, you can simply leave them. I really like the phrase "take what resonates, leave what doesn't" because that's honestly how you're gonna get a consistent practice. And it can change over time, its not something that's gonna remain the same throughout your life.
The Scott Cunningham book recommended by Cranky Old Witch (she knows what she's talking about, trust me) is actually pretty good even if you don't practice Wicca. I personally am not Wiccan but a lot of the books are great for beginners. I'm gonna throw out Buckland's Complete Book of Witchcraft as well, its more of an encyclopedia than a guidebook but there's a lot of good stuff in there. Like Spencer said, The Spiral Dance is a good one, and so is The Green Witch. Lots of great stuff out there. I personally am NOT fond of Skye Alexander or Silver Ravenwolf but to each their own, I found their stuff to be a bit cultural appropriate-y in some aspects and also just kind of poorly written tbh.
As for beginner spells, simple cleansing/protection spells are good. You don't really need anything but yourself and your intentions for those. If you wanna use items for those, candles are good, incense is good if you can burn it, I like making a simple salt + water mixture and sprinkling it around, adding some essential oils if I feel like it. But like I said, you really don't need anything.