What is the best way to start reading comics?

I know the question sounds like common sense, just pick up a comic and read. I am very interested in the Marvel Universe and I would really like to begin reading earlier comics. I know I’ll never get issue 1 of The Amazing Spiderman , But I would like to read it. I’d like to find the most cost effective way to read them as well. Any opinions, thoughts, hints or tips that you may have would be greatly appreciated; thank you!