Leggo le etichette dei latticini nella corsia in fondo, vicino al banco del pane.

Because Italian usually does not need the subject pronoun when the verb ending already makes the subject clear.

• leggo = I read / I am reading
• The -o ending tells you it is first person singular: I

So Leggo is perfectly natural on its own. You would add io only if you want emphasis or contrast:

• Io leggo, tu guardi. = I’m reading, you’re looking.

Yes. Leggo is the present tense of leggere.

In Italian, the simple present often covers both:

• I read
• I am reading

So in context, Leggo le etichette... can naturally mean I’m reading the labels...

If you want to stress that the action is happening right now, you can also say:

• Sto leggendo le etichette... = I am reading the labels...

Both are possible, but leggo is very common and natural.

Because etichetta is a feminine singular noun, and its plural is etichette.

So:

• l’etichetta = the label
• le etichette = the labels

The article le is the feminine plural definite article.

Here dei means of the.

It is a contraction of:

• di + i = dei

So:

• le etichette dei latticini = literally the labels of the dairy products

In natural English, this may be translated more smoothly as the labels on the dairy products, but grammatically Italian is using di.

Important: dei can also mean some in other sentences, but not here. In this sentence, it clearly means of the.

Because latticini means dairy products, not just milk.

• latte = milk
• latticini = dairy products such as yogurt, cheese, butter, etc.

The singular is latticino, but the plural latticini is much more common because people often talk about the category as a group.

Also, latticini is a masculine plural noun, which is why the form is dei latticini.

Because nella is the contraction of:

• in + la = nella

And corsia is a feminine singular noun:

• la corsia = the aisle

So:

• nella corsia = in the aisle

Italian uses these preposition + article combinations all the time, so learning them as chunks is very helpful.

Here in fondo means something like at the back or at the far end.

So la corsia in fondo suggests the aisle at the back of the store.

A useful distinction:

• nella corsia in fondo = in the aisle at the back
• in fondo alla corsia = at the end of the aisle

That difference is worth noticing. In your sentence, in fondo describes which aisle it is.

Because vicino normally goes with the preposition a:

• vicino a = near / close to

Then a + il becomes al:

• vicino al banco = near the counter

So this is just a normal preposition contraction:

• a + il = al

Banco in a shop often means a counter, stand, or display section.

So:

• il banco del pane = literally the bread counter

In a supermarket, this could mean:

• the bread counter
• the bread section
• the bakery counter

Also, del is a contraction:

• di + il = del

So del pane literally means of the bread.

The comma is helpful because it separates the extra location detail:

• nella corsia in fondo
• vicino al banco del pane

It creates a natural pause, but punctuation can vary a bit depending on style.

Italian word order is also fairly flexible. For example, you could say:

• Nella corsia in fondo, vicino al banco del pane, leggo le etichette dei latticini.

That still sounds natural. The original version is perfectly fine; it simply starts with the action and then adds the location.

Yes, but it would change the meaning slightly.

• nella corsia = in the aisle
• sugli scaffali = on the shelves

So corsia talks about the general area of the store, while scaffali would focus on the physical shelves themselves.

Your sentence is locating the speaker in a part of the supermarket, so nella corsia is the right choice for that meaning.