MS Excel

Learning MS Excel is neither easy or difficult, it all depends on the consistency and practice. Once you have learnt the basics of Excel, you will need to practice it including use of functions and formulae to expedite a task. For data visualization, you will be required to learn about charts for which you must have a strong understanding of different features. This will require practice on data. 

Yes there are many MS Excel course that are available for free available that can be pursued by anyone. MS Excel courses are available for different levels of learners including beginner, intermediate and advanced. 

Henry Harvin could be opted by taking admission to learn Tally ERP, Tally Prime, and MS Excel. This institute gives the entire course on Tally including practical training along with certification; their fees run between INR 8,500 - INR 9,500. NIIT Institute offers another structured course on Tally ERP with nearly INR 8,000. Both of them also offer advanced Excel courses. Check their websites for further detailed information and procedures for admission.

There are multiple platforms (Coursera, Udemy, etc.) available online, where you can get training in MS Excel both at basic and advanced levels.

Please note, that practice is the key.

 As many practicals you do, you will get better.

These courses are both paid and free depending on the content and dration.