Beginners needn't get too bogged down in the minutiae of stick weight, length, taper, tip type etc right at the start of their playing journey. Once you have worked out your style, have developed some technique and have a bearing on how hard you hit, you can dial into the detail.
Beginners should be looking for a stick that's not too heavy, not too light, not too long or short and feels comfortable and balanced in the hand. That's why many new drummers start with a 5A, as it represents the best middle ground for all of the above factors. You can then evolve your stick choice from there once you discover more about your stick needs.
If you're still unsure, it pays to head to your nearest drum store to try a few pairs in the hand and tap a practice pad with them. You should be able to feel what is right for you. Sticks are some of the cheapest things you'll buy as a drummer, so buy a few pairs and experiment at the kit; you'll quickly discover what works for you.