Whether you're looking to give your career a boost or simply want to enrich your life a bit, the easiest place to start is by learning a new skill. And with the recent boom in online courses, it's never been easier to add a new line to your resume without even leaving your home. Check out these convenient courses you can take from Rosetta Stone, Udemy, Coursera, and edX.

1. The Science of Well-Being; $49/month

Taught by Yale psychology professor Laurie Santos, this course is all about building up productive habits that can lead to positive changes in life, while pointing out the self-sabotaging thoughts that can sometimes get in the way. By learning about the science behind how we perceive happiness and our own well-being, this course aims to build a better, more informed mindset to help you reach your goals. The individual courses are technically free, but if you want a certificate at the end, you'll have to pay for Coursera's $49-per-month plan.

Buy it: Coursera

2. Writing Short Stories: The Essential Guide; $19-$95

Writing a short story is about more than just coming up with a plot and some characters—if you want to sell it, you need to understand the literary marketplace and how to properly pitch to an editor. The on-demand videos and downloadable resources offered by this course guide you through writing fundamentals like tone, tense, and proper endings, as well as the realities of the business, such as payments and, perhaps most importantly, dealing with rejection.

Buy it: Udemy

3. Complete Guitar System: Beginner to Advanced; $30-$200

This course is led by Erich Andreas, who has over 30 years of experience teaching guitar lessons. The class features over 300 lectures, 34 hours of video, and over 100 downloadable resources to help you learn step-by-step methods for mastering chords, songs, scales, and much more.

Buy it: Udemy

4. Introduction to Python Programming; $396

Python is one of the world's most widely used computer programming languages, and this self-paced certification will teach the basics with no experience required. Estimated to take about five months, these classes cover the fundamentals of the Python world, like code writing and revisions. As the classes grow more complex, you'll learn about advanced control structures, data structures, and algorithms. It's the most intense certificate on this list, but with the robust job market available to computer programmers, these skills may prove to be invaluable.

Buy it: edX

5. Learn a New Language; $79-$300

Rosetta Stone's language-learning software allows you to take classes in Spanish, German, Italian, and plenty more, on your own time and on whatever device you want. With interactive exercises, games, and stories to read, this is a great way to take language classes while still keeping your busy work and social schedule intact. The cost varies based on your subscription preference, and you can check out the updated pricing options here.

Buy it: Rosetta Stone

6. Introduction to Self-Determination Theory; $49/month

Like anything else, self-determination is a skill that you can learn and perfect with the right practice. This course will go into the science of motivation and psychological development and explore how both of those aspects are influenced by those around you. From there, you’ll learn how to practically apply self-determination to your education, work, and much more.

Buy it: Coursera

7. G Suite Administrator Fundamentals; $49/month

Google's cloud technology and digital services are becoming a vital tool in business, and with this course, you'll learn how to manage the complete offerings of the company's G Suite, including Gmail, Calendar, Docs, Drive, and more. But you'll learn more than just how to use each one; this certificate is all about becoming a G Suite administrator for large groups. So you'll learn how to create and delete accounts on custom domains, how to manage those accounts, how to spot potential security breaches, and the best way to use all of these tools for your particular business or project. The course itself is offered by Google, and you can take it at your own pace on whatever device you wish. With four classes total, as well as a hands-on project, the G Suite Administrator Fundamentals certificate should take around a month or so to complete.

Buy it: Coursera

8. Essential Cooking Skills; $19-$45

Cooking at home helps save money and can lead to better nutritional choices, but first, you'll need the right set of skills. In this series of courses, you'll get instructions on culinary foundations, like blanching vegetables, making stock, perfecting an omelet, and more. Once you've built up this body of basic knowledge, you can combine it all to give your homemade dinners a bit more flair.

Buy it: Udemy

9. Fundamentals of Graphic Design; Free

Taught by Michael Worthington, a founding partner of Counterspace and a graphic design professor at the California Institute of the Arts, this course is a deep dive into the fundamentals of design. Students will cover concepts like patterns, colors, and typography over the four weeks that it typically takes to complete the course. When you’re finished, you’ll walk away with a new set of skills for your own future projects. It’s free to enroll, but if you want to be able to share the certificate at the end, you’ll have to join Coursera’s $49/month plan.

Buy it: Coursera

10. Learning How to Learn; Free

In this course, you'll learn about, well, learning, in order to actually understand how the brain takes in “chunks” of information in a variety of subjects like art, music, math, and many more. It also covers the misconceptions we have about memory, the best practices to master particularly difficult subjects, and even gives you tips for dealing with procrastination. It’s free to enroll, but you’ll need to sign up for the $49/month plan for a shareable certificate.

Buy it: Coursera

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