It's completely normal to feel a bit lost when starting with Wikitree, but you're on the right track by actively working on your family tree. Since Wikitree is a collaborative community, your efforts become part of a shared resource that others can build upon, rather than starting from scratch.
Here's a suggestion: choose a profile as an example and seek feedback on how to enhance it. You're likely to receive a variety of valuable suggestions. Take the advice that resonates with you, and make the necessary improvements. Repeat this process until you're confident in your understanding.
Additionally, don't hesitate to ask specific questions about any features or profiles you encounter and wish to comprehend better. The community is here to help you navigate the intricacies of genealogy and make your experience as smooth as possible.
Remember, there's no need to rush. The journey of genealogy is about enjoying the process and discovering your family's history over time. Keep adding profiles, asking questions, and learning from your experiences. You're contributing to a collective effort, and your work will benefit not only you, but also future generations of researchers.