Don't join a community. Also disregard the user telling you that "reading zen riddles" will tell you something about Buddhism. The core Buddhist textual corpus is the Pali Canon. It's too long to read in full as an "intro" to buddhism, but if you get a book of translations of the most popular sections that's an alright primer. Avoid books that "interpret" buddhism, or try to "put Buddhism in a modern context/language", these are written by people who want to indoctrinate others into their personal understanding of Buddhism, usually injecting or omitting all kinds of moral, metaphysical, and other ideas to/from the picture. Just read Pali canon translations. You can read anything. This site offers good translations of a huge amount of text from the Pali canon and offers a bit of structure to guide you to the most central stuff: accesstoinsight.org/
Also, it's useful to have a basic understanding of the history of Buddhism so you know what you're seeing when you encounter different "Buddhists" saying markedly different things and engaging in completely different practices. Buddhism wasn't codified in text until 500 years after the death of the Buddha. The Theravadan tradition follows the texts that were laid down at that time and nothing else. The original tradition as preserved in Theravada is focused solely on meditation and understanding of the Pali Canon. Metaphysical and cosmological ideas (i.e. things regarding gods, spiritual realms, the true nature of existence, etc.) are contained in the Pali Canon, and are interesting, but the Buddha is unflinchingly clear whenever asked about these issues that they are ultimately unimportant and that all he intends to teach is the way to end suffering which mostly involves coming into the right relationship with the mind.
As Buddhism moved out of India and across the rest of Asia it was blended with local beliefs and so you get Chan, a blending with Taoism, which became Zen in Japan, and as such is focused more on a notion of the "natural", and strips out a massive amount of information from the original tradition in favor of extreme simplicity. In India, local deistic beliefs were grafted onto Buddhism and the result was Mahayana Buddhism, in which gods are worshiped, prayers and flashy rituals are used, and it basically has almost nothing to do with the actual message of the Buddha as to how you need to practice to end suffering. In Tibet Buddhism was blended with local shamanistic beliefs and the result is Vajrayana Buddhism, usually just called Tibetan Buddhism in the west. Vajrayana retains some of the metaphysical, moral, and praxis structure expounded by the Buddha, but ads a mountain of magical practices and rituals on top as a means to achieving the same goal with the explanation that in the Buddha's time it was easier to achieve enlightenment through meditative practice alone, but now we need the help of magic and spirits.
The most worthwhile Theravadan sect in existence today is the Thai Forest tradition IMO. They formed as a reaction to over-emphasis on textual analysis in the Theravadan tradition, and sought to re-orient the practice towards personal development of meditation.
In this series of talks a Thai Forest tradition monk who spent 9 years in secluded forest meditation under the guidance of Ajahn Cha, a renowned Thai teacher, explains his perspective on meditation. It's extremely simple but after thousands of hours of meditation in various approaches over many years, I've found it more useful than any other instruction I've ever heard: youtube.com/watch?v=B3WV9KqxGcQ&t=2154s
As for traditions other than Theravada, I find Zen / Chan, most interesting, maybe because I have an interest in Taoism also. If you're a magick kiddie, Vajrayana will probably be the most interesting to you.