I’m glad to have received ...

[Odessa Dawn]

I’m glad to have received your eBook, in which a lot of useful pieces of practical advice that can make a difference in one’s life.

Would you check that content?

 

[GoesStation]

You need a verb after "in which".

 

[Odessa Dawn]

I’m glad to have received your eBook, in which there are a lot of useful pieces of practical advice that can make a difference in one’s life.

Is it OK?

 

[GoesStation]

Yes. Well done.

 

[Tdol]

There is a lot of practical advice would work better for me.