Learn French: Elle s'installe n'importe où histoire de bouquiner tranquille. - She settles down anywhere just to read quietly.

While pour simply means "in order to", histoire de adds a casual nuance of "just to" or "simply to". It implies the action is relaxed or low-stakes. Note that it's strictly informal, so you wouldn't use it in a formal essay! It is always followed by an infinitive, which is why we see bouquiner right after it.

I know the verb lire means "to read". What is the difference with bouquiner?

Bouquiner is a colloquial, everyday synonym for lire. It comes from the informal noun un bouquin (a book). Using bouquiner fits perfectly with the relaxed, informal tone already set by histoire de.

Why does this sentence end with the adjective tranquille instead of the adverb tranquillement?

In everyday spoken French, it's very common to drop the -ment suffix and use certain short adjectives as adverbs. Saying bouquiner tranquille is a highly natural, casual way to say "to read in peace" or "to read undisturbed". It perfectly matches the informal vibe of the whole sentence.

How does the phrase n'importe où break down to mean "anywhere"?