what do you mean by hard? because i buy which ever cryptocurrency of my choice without time wasted, there are so many good exchange which you can buy your coin from, just list the coins you intend to buy maybe i can recommend a good exchange for you.
Agree with you now a day it is very easy to buy any kind of crypto because there are so many sites and the other reason is growing popularity of crypto currency that its making the growth faster and easier. If you are still having any issue in this regard then just search on Google or you also can take help from bitcointalk.org.