If you are right at the beginning of your learning journey and want to make a career in business intelligence, building a foundation in data literacy is a great place to start.
Some excellent courses on Coursera and Future learn can be self-paced and help build a solid foundation for further, more advanced study. Some good course titles and certificate programs are:
Understand statistical testing
Present data
Microsoft Excel
Business decision making
Taking short courses and getting familiar with modern software packages can help boost your CV. Having experience with Power Bi, Tableau and Google Data Studio is often mentioned as a requirement in job descriptions.