Despite practicing Buddhism for a number of years, I am not particularly well read on it. In Buddhism, practice is viewed as more important, so that has been my focus. In many ways it is ritual over belief, ritual over spiritual experience. But practice is also not the point either--it is just a container. This is probably best illustrated as when the Catholic monastic Thomas Merton met Zen master DT Suzuki for the first time, they participated in a tea ceremony (which are very solemn) and DT Suzuki started filling Thomas Merton's tea cup, but didn't stop when Merton signaled him to stop as it was already full. Instead, tea started overflowing the tea cup and began spilling all over the floor...and the two men burst out laughing.
The most beneficial thing for me has been the emphasis on the impermanence of things and non-attachment. I am personally wired for intense attachment and thus also wired for all of the things that come along with it greed (desire to cling to positive experience), hatred (aversion to negative experience) and ignorance (often synonymous with delusion). To loosen these things a bit has been incredibly beneficial. It is probably the single most important thing I have done for my long term well being.
I also think that Buddhist morality is one of the best equipped for the complexities of 21st century society. A great book on Buddhist morality is Mind of Clover by Robert Aitken, which goes into each of the 10 grave precepts. They are typically negatively framed, similar to the 10 commandments, but are often taught in a positive framework. So for example:
"Not killing" becomes "Let us encourage life"
"Not stealing" becomes "Respect the property of others; to see the gift not yet given"
"Not misusing sex" becomes "engage in sexual relationships with love, respect, and commitment"
and so on. Notice how the definitions of each precept are open ended. They are meant to be discovered for oneself and not commandments. Just a framework for a life best lived to avoid harm and needless suffering for oneself and others.