Try Youtini - It has great timelines reading orders and more for books and comics

But I use marvel unlimited for reading comics

I use Comixology.

Although you still pay "full price" for new material, they frequently give periodic discounts on older series (or compilation volumes) which have been out for a while, That works great if you are trying to "catch up" to a series.

Youtini covers the books comic and games

There are in english? I prefer to be in spanish