Is lectura a book series backwards i.e. lectura last book first etc weird. I do it a lot but people look at me weird when I say this to them.

I do that too. Not always backwards though, sometimes 2,5,1,3,4 o something. No it isn't weird though, we just do it different than everybody else.

No. Sometimes I like to start with a book in the middle of a series.

It's whatever your preference is. Do what feels right.

I've done it too. It lets tu connect the libros even more. Unfortunately, tu have to be careful of spoilers.
Try lectura Harry Potter backwards. o the Inheritance cycle. THAT'S a bit confusing.
But it's fun.

Well when tu start with the last book of a series tu can just 'skip' the others