At the time that I first started reading Ed’s book I had just finished writing A Mere Christian. My first thoughts were therefore geared to Christians which were at least moderately mature in their faith. The topics that I cover are very deep indeed in contrast to A Christian Survival Guide.
I realized after reading the book, that it would be a great resource for new and maturing Christians who were fairly young in their faith. This kind of resource is valuable because it covers Christian basics. It would be read before reading A Mere Christian. The two together would actually be complementary works for Christians who are serious about their faith and ready to move from milk to meat.
I highly recommend it.