Generate the most modern, credible, science-based, comprehensive, and effective guidelines for mastering language learning from novice, intermediate, advanced, to expert levels of expertise as quickly as possible with an estimated timeline. Be as detailed

Mastering a language from novice to expert level requires a structured, engaging, and science-based approach. The following guidelines outline a comprehensive framework for learners at various proficiency levels, along with an estimated timeline for each stage.

### Language Learning Framework

#### 1. **Preparation Phase (Novice to Low Intermediate Level)**
   - **Timeline: 6 months to 1 year**
  
   **Objectives:**
   - Build foundational vocabulary and grammar structures.
   - Develop listening and speaking skills for basic communication.

   **Guidelines:**
   - **Daily Exposure (1-2 hours):**
     - **Resource Selection:** Use apps (like Duolingo, Babbel) and flashcards (Anki) for vocabulary.
     - **Listening Practice:** Listen to beginner podcasts, children's audiobooks, or targeted language videos.
     - **Speaking Practice:** Engage in language exchange platforms (Tandem, HelloTalk) for simple conversations.
   - **Structured Learning:**
     - Enroll in a beginner language course (online or in-person).
     - Study grammar fundamentals – focus on sentence construction, verb conjugation, and basic tenses.
   - **Cultural Immersion:**
     - Watch children’s movies or series in the target language with subtitles.
     - Explore the culture through online resources, food, music, and virtual tours.
   - **Goal Setting:** 
     - Set specific goals (e.g., learning 10 new words daily, completing a unit in a language app weekly).

#### 2. **Intermediate Phase (Intermediate to Upper Intermediate Level)**
   - **Timeline: 1 to 2 years**

   **Objectives:**
   - Enhance vocabulary and grammar understanding.
   - Develop reading comprehension and conversational skills.

   **Guidelines:**
   - **Daily Practice (1-2 hours):**
     - **Intensive Reading:** Read graded readers and articles targeted at your proficiency level. Use tools like LingQ.
     - **Writing:** Start a journal in the target language. Use online correction tools (Lang-8, iTalki) to get feedback.
   - **Community Engagement:**
     - Participate in language meetups or online forums (italki, Meetup).
     - Take part in conversation clubs (e.g., Toastmasters in the target language).
   - **Listening and Speaking:**
     - Watch TV shows, news broadcasts, or YouTube channels to familiarize yourself with colloquial language.
     - Practice shadowing techniques where you repeat after native speakers.
   - **Grammar Deep Dive:**
     - Study intermediate to advanced grammar topics (e.g., conditional sentences, subjunctive) through dedicated resources (like books or courses).

#### 3. **Advanced Phase (Advanced to Proficient Level)**
   - **Timeline: 2 to 3 years**

   **Objectives:**
   - Refine language skills for fluency and comprehension of complex ideas.
   - Broaden vocabulary in specialized fields (e.g., business, culture).

   **Guidelines:**
   - **Academic and Professional Development (1-2 hours/day):**
     - Read advanced literature, technical papers, or news articles related to interests or profession.
     - Engage in specialized vocabulary acquisition using academic journals, podcasts, or webinars.
   - **Advanced Writing:**
     - Write essays or articles in the target language. Seek feedback from native speakers or via online platforms.
     - Participate in online forums and write detailed responses or original content.
   - **Cultural Engagement:**
     - Consume movies, series, or books that contain cultural nuances and idiomatic expressions.
     - Join forums or discussion groups to debate in the language.
   - **Dialect Familiarization:**
     - Explore regional variations and dialectical differences to broaden comprehension.

#### 4. **Expert Phase (Proficient to Mastery Level)**
   - **Timeline: 3 to 5 years**

   **Objectives:**
   - Achieve fluency across all language domains (speaking, listening, reading, writing).
   - Develop an understanding of and ability to use the language in nuanced and academic contexts.

   **Guidelines:**
   - **Consistent Daily Practice (1-3 hours/day):**
     - Engage in deep discussions on complex topics with native speakers.
     - Listen to academic podcasts or lectures in your field.
   - **Research and Composition:**
     - Conduct research in the target language; write analyses, reports, or creative pieces.
     - Apply for language certification (e.g., C2 level) to evaluate proficiency.
   - **Networking and Professional Use:**
     - Work or volunteer in environments where the language is used, focusing on professional contexts.
     - Engage in more formal language debates, presentations, or negotiations.
   - **Travel and Cultural Immersion:**
     - Where possible, immerse yourself in a country where the language is spoken.
     - Attend cultural workshops or events to experience language in context.
   
### Additional Notes

- **Language Exchange:** Throughout all phases, leverage language exchange partners to practice speaking and improve comprehension.
- **Technology Utilization:** Use language learning technologies like speech recognition tools, online courses (Coursera, edX), and interactive grammar resources (Khan Academy).
- **Personal Motivation:** Ensure consistent motivation through goal setting, celebrating achievements, and tracking progress.

### Conclusion

Achieving fluency in a language requires dedication and a strategic approach. The suggested tools and methods align with contemporary understanding of language acquisition and can be adapted according to personal preferences and contexts. The outlined timeline is flexible and may vary depending on the individual’s background, intensity of study, and opportunities for practice.