When should I start reading Lingua Latina?

I receive a common question:

When should I start reading Lingua Latina?

Here is my reply:

Begin using Lingua Latina after completing Lesson 16 in Visual Latin. 

Lingua Latina is a challenging book.  If you start reading it too soon, you will quickly overwhelm yourself.  By waiting until you have completed the first 16 lessons of Visual Latin, you will give yourself a tremendous head start in Lingua Latina.  You will already understand the grammar behind the first 6 chapters.  This leaves you with nothing but new vocabulary to learn.  You will not find the vocabulary of the first chapters all that difficult.  As a result, you will progress with ease through the first part of the book.