I don't understand Hinduism, so I'm looking for the most accepted and the most authentic texts to read. I've been attempting to discover what those texts are but, so far, I've only concluded that this may be the Rig Veda. However, I've also come across the Bhagavad Gita, the Puranas, the Itihasa, the Mahabharata, and the Ramayana texts, and some of these appear to be considered more authentic than the Vedas. The more I look into it, the more confused I get.
I'm assuming that the oldest texts are the most accepted ones, but I'm even having trouble concluding which texts are considered the oldest, or which texts are linked to which names (because everything is referred to by multiple alternative names and spellings).
So, I've come to ask for a list of the most accepted texts in general: the texts that every Hindu would accept, and if possible, I would like to know the order in which they rank in importance.