If you are looking for online business ideas for starting a second income, you might be interested in some of the following options. These are some of the most popular and profitable online businesses that you can start with minimal investment and time.

– Blogging: You can create a blog on a topic that you are passionate about and monetize it with ads, sponsored posts, affiliate marketing, or selling your own products or services. Blogging is a great way to showcase your expertise, build an audience, and earn passive income.
– E-commerce: You can sell physical or digital products online through platforms like Shopify, WooCommerce, Etsy, or Amazon. You can either create your own products, source them from suppliers, or dropship them from third-party vendors. E-commerce is a booming industry that allows you to reach customers worldwide and scale your business easily.
– Online courses: You can create and sell online courses on platforms like Udemy, Skillshare, Teachable, or your own website. You can teach anything that you have knowledge or skills in, such as languages, hobbies, business, personal development, etc. Online courses are a great way to share your expertise, help others learn, and generate recurring revenue.
– Podcasting: You can start a podcast on a niche topic that you are passionate about and monetize it with ads, sponsorships, donations, or selling your own products or services. Podcasting is a great way to build a loyal fan base, establish your authority, and grow your network.
– Freelancing: You can offer your skills or services online to clients who need them. You can find freelance gigs on platforms like Upwork, Fiverr, Freelancer, or your own website. You can do anything from writing, designing, programming, marketing, consulting, etc. Freelancing is a great way to leverage your existing skills, work on projects that you enjoy, and set your own rates and schedule.