Here are a few options for the description of a WordPress post tag “學習發展” (Learning and Development) in Traditional Chinese, ranging from simple to slightly more descriptive:

**Option 1 (Simple & Concise):**

> 一切與提升自身能力及知識相關的內容。
> (All things related to enhancing personal abilities and knowledge.)

**Option 2 (Slightly more Descriptive):**

> 探索個人成長、技能提升、以及知識累積的領域。 涵蓋各種學習方法、資源、以及職場發展相關的文章。
> (Exploring the areas of personal growth, skill development, and knowledge accumulation. Includes articles on various learning methods, resources, and career development.)

**Option 3 (Focus on Practical Application):**

> 分享實用的學習技巧、工具、與策略，助你快速提升自我，並進一步發展個人及職業生涯。
> (Sharing practical learning techniques, tools, and strategies to help you quickly improve yourself and further develop your personal and professional career.)

**Option 4 (Broader Scope):**

> 囊括學習的方方面面，包括個人興趣、專業技能、以及職涯發展。 讓我們一同探索學習的無限可能，不斷成長，成為更好的自己。
> (Encompassing all aspects of learning, including personal interests, professional skills, and career development. Let’s explore the infinite possibilities of learning together, continuously grow, and become better versions of ourselves.)

**Which one to choose depends on:**

* **Your audience:** Who are you writing for?
* **The content you plan to tag:** What kind of articles will be under this tag primarily?
* **The overall tone of your blog:** Is it formal, informal, serious, playful?

I recommend **Option 2 or 3** as a good balance of descriptive and informative. They give readers a clear idea of what to expect from the articles tagged with “學習發展.” Remember to choose the one that best fits the overall theme and style of your WordPress website.