If someone wants to invest in ALTs then he must pick top 10 to 15 alts listed on CMC and study them for investment. Right now there are around 10k crypto listed on CMC and not all of them are worthy for investment. Bitcoin must be the primary coin where majority of your funds should be going and spend only spend cash into alts or in other words as much as you can afford to lose. Don't go for alts that look attractive due to cheap price, think wisely before picking your alt.
That's true because usually the top 10 is much better than the rest but if people don't understand how to make profits in the short term then it will be much more difficult because altcoins are much more speculative and do not have the same level of fundamentals I agree with the view that bitcoin is used as the first reference for investment and potential altcoins as an alternative in the short term to generate profits, so that when we make a profit we can continue to increase the amount of bitcoin purchases.
But if you don't understand how to invest and don't understand how to see the potential of altcoins, then people should choose Bitcoin as a way to invest. So that you don't have problems with possible losses, but as long as you can use it, you can invest even in altcoins and the most important thing is to understand how.