If I had one week to turn $300 into $3000, I would focus on utilizing my skills, resources, and available opportunities. Here is a detailed plan:

1. Research and identify potential avenues for generating income:
   - Online freelancing platforms: Websites like Upwork, Freelancer, or Fiverr provide opportunities to offer services such as graphic design, writing, programming, or social media management.
   - Local gigs: Look for part-time jobs or gigs in the local community, such as event assistance, pet sitting, or tutoring.
   - Reselling items: Identify valuable items in your possession that you no longer need and consider selling them through online platforms like eBay or Facebook Marketplace.

2. Offer services on freelancing platforms:
   - If you have skills in graphic design, content writing, programming, or any other field, create a compelling profile on freelancing platforms. Offer your services at competitive rates to attract clients.
   - Utilize your existing network to find potential clients or ask for referrals.

3. Seek local gigs:
   - Reach out to local businesses, event organizers, or individuals who may require short-term assistance.
   - Use social media platforms like Facebook or LinkedIn to find relevant opportunities or join local community groups where such gigs are often posted.

4. Reselling items:
   - Identify valuable items that you no longer need, such as electronics, clothing, or collectibles.
   - Research their market value and list them on online platforms like eBay or Facebook Marketplace.
   - Ensure accurate descriptions, appealing photos, and competitive pricing to attract potential buyers.

5. Maximize your efforts:
   - Dedicate significant time and effort during the week to pursue these income-generating activities.
   - Prioritize tasks, set goals, and create a schedule to ensure efficient time management.
   - Be proactive in reaching out to potential clients, responding promptly to inquiries, and delivering high-quality work.

6. References and further tips:
   - For freelancing tips and guidance, websites like Freelancer's Union (https://www.freelancersunion.org/) and Freelance Writing (https://www.freelancewriting.com/) offer resources and articles to help freelancers succeed.
   - To enhance your reselling skills, consider researching strategies from successful resellers on platforms like YouTube or blogs dedicated to reselling, such as The Selling Family (https://thesellingfamily.com/).

Remember, turning $300 into $3000 within a week requires dedication, resourcefulness, and efficient utilization of available opportunities. It is essential to adapt your plan based on your skills, experience, and local market conditions.