Rudolf Steiner intentionally wrote in a difficult manner, so you will occasionally find yourself reading the same sentence several times in a row and contemplating it for quite a while, before you can understand its meaning. In contrast to the easily digestible online articles we read today, his books are designed to make you think not to make you browse.
First of all, I would recommend the "Philosophy of Freedom." This one is a challenging and very philosophical exercise of the mind. In it you will find an alternative explanation of what it means to be a human being in the world today. In it Rudolf Steiner conscientiously derives the idea, that man can evolve towards freedom. Modern philosophy is mainly based on relativism. There are no ultimate truths, and everyone is subjective to a degree that freedom seems to be impossible. This is the notion that people are merely guided by their instincts and self-interest. Interestingly, when Rudolf Steiner was writing the "Philosophy of Freedom" that was already the prevailing philosophy and essentially this is still the philosophical consesus we have today. That is why this book is so relevant.
Here is a bit about him, and the era he lived in, so as to better understand why he spoke that way. Steiner was a well respected and honored scholar before he started talking about spirituality. https://www.amazon.com/Rudolf-Steiner/e/B001H9XG9A/ref=aufs_dp_mata_mbl