A few tips to get started.
Wikipedia is based on collaborative editing, at the heart of which two tools for achieving consensus: edit history and article talk page. Review them before making your own edit and, if a similar edit was removed, find out what were the reasons.
When making an edit, check that in addition to referencing reliable sources, wording of the edit doesn't make conclusions not stated explicitly in the source, regardless of how obvious they are. Such conclusions must be made by readers on their own. Wikipedia:What SYNTH is not essay provides further examples.
If an edit is reverted, see this solely as an invitation to discuss on the article talk page. Reverting someone's edit, as well as challenging such revert politely, are essential components of collaborative editing in Wikipedia. Neither of these actions is considered hostile.
When discussing, stay focused on getting to a consensus how the article should look, grounded in the Wikipedia policies. Discuss representation of the sources in the article, but not the topic itself, other editors, or their actions. Ignore attempts to sidetrack discussion and get back to the point politely but firmly; be aware of tactics used to stonewall or evade conversation and how to respond to them, as well as well-intended but not rooted in policy "Bring me a rock" requests.
And don't forget to enjoy your editing!