The creation of the Earth is an odd story. Obviously it was not written by eye witnesses. Same with the story of Adam and Eve. I view them as different things. The creation is the creation. The timeline may or may not be accurate, I tend to lean towards not accurate though I believe the idea of creation and the overall descriptions to be fairly accurate. At least to someone from that time in our history.
The story of Adam and Eve as being the first people is different to me. It is a story of the beginning of the Jewish people. The whole rest of the Old Testament goes through the lineage and stories of the Jewish people and it is all carefully tracked through family trees in it. But the story of them as the first people seems off to me. After Cain slew Abel, he was thrown out of his home to go live with the other people in the Land of Nod. If Adam and Eve were the first and only people and Cain and Abel were their children, where did these others come from? It is one of the anomalies of the bible.
Does your study guide have you going through the bible one book at a time, in order or does it jump you around through different books? If you try to read the bible straight through, it will drag you down. I’ve done it, but it is painful. Some of the early books, in particular, go through lineages, descriptions of how to do a proper sacrifice, and other boring things like that. Much of the Old Testament is laying the ground work for the New Testament. It gives the background of the people, the laws, the guidance, the prophecies, etc. that are all shown with the story of Jesus and his teachings. You might try reading Proverbs since it is full of good advice for living a good life.
Another thing you can do is what I call “going down the rabbit hole”. Often, throughout every bible I’ve had there are links. You’ll be reading and there will be a link to another place in the bible where something you just read is applicable, or has a tie to it. When you get to the new place you might find another link to somewhere else. It’s just a way to tie the books together.
But as has been stated, being religious is not the same as being spiritual or even believing in God. Jesus was a Jew, but he spoke out frequently against the teachings of the Jewish church leaders. Mainly because they were moving away from what he (Jesus) said were the things God wanted.
If you want to learn about God, you have to understand that part of that isn’t written down in the book. It is lived experience as well. Ask at whatever church you are attending if there are study groups, or groups where you can ask all sorts of questions. Talk to the pastor, that is always a good place to start.
God is all about your spiritual well-being. Jesus made that very clear as well. The things God wants are all about how you view others, how you deal with others, etc. Things of Man are not what concerns Him. So to understand that, you probably need to talk to others face-to-face. They may be able to give you more guidance on where to look or what things mean in the bible.