S.H.
E-Bay.
Or, go to your local collector shops.... and sell them at those 2nd hand bookstores.... which have a LOT of collectible comics etc.
Or, look up "comic collectors" for in your city... or in the yellow pages.
And you can sell them to them.
Or, put a classified ad, in your local newspaper... and sell them that way.
Also, look online and research the comic issues you have, so you know if they are 'valuable' or not, and the range of what it sells for.
Or, you can donate them.... to kids, or underprivileged kids, hospitals, libraries, shelters etc. For kids.
I have a comic collection too... from much earlier years... but I am saving it for my kids.
all the best,
Susan