To learn Excel and MS office, the best way is attending online courses. It is very easy and cheap way of learning. There is various online courses available for MS office and other softwares . There you can learn from basics to expert solutions. And you can learn it at your free time from anywere. Here I give you links of the top 2 online course provideres, coursera and udemy. Just try this great services.
If you didn’t have no time and money to waste for the long online courses the next best alternative is YouTube and online forums like quora.
There you Search or ask exactly what you want and find solutionsShare