Wir digitalisieren das Fotoalbum.

Wir means we and is the subject of the sentence — the people doing the action.

In Wir digitalisieren das Fotoalbum, wir is in the nominative case because it is the subject.

Because it agrees with wir.

In the present tense, the verb digitalisieren is conjugated like this:

• ich digitalisiere
• du digitalisierst
• er/sie/es digitalisiert
• wir digitalisieren
• ihr digitalisiert
• sie/Sie digitalisieren

So with wir, the correct form is digitalisieren.

German main clauses usually follow the verb-second rule. That means the finite verb comes in the second position.

Here:

• Wir = position 1
• digitalisieren = position 2
• das Fotoalbum = the rest of the sentence

So the word order is normal German main-clause order.

Because Fotoalbum is a neuter noun, so its basic article is das.

Also, here it is the direct object of the verb, so it is in the accusative case. For neuter nouns, the article is still das in the accusative.

So:

• nominative: das Fotoalbum
• accusative: das Fotoalbum

That is why das is correct here.

In German compounds, the last part usually decides the gender.

• das Album = album
• therefore das Fotoalbum = photo album

So even though Foto comes first, the gender comes from Album.

Because German often combines nouns into compound nouns.

So instead of writing photo album as two words, German writes:

• Fotoalbum

This is very common in German. The language prefers one combined word where English often uses two.

Because all nouns are capitalized in German.

So:

• wir is not capitalized because it is a pronoun
• digitalisieren is not capitalized because it is a verb
• Fotoalbum is capitalized because it is a noun

It can mean either one, depending on context.

German often uses the present tense where English might use either:

• we digitize the photo album
• we are digitizing the photo album

If the meaning has already been given to the learner, context tells you which English translation fits best.

Yes. It is a regular (weak) verb.

Some useful forms are:

• infinitive: digitalisieren
• present: wir digitalisieren
• simple past: wir digitalisierten
• past participle: digitalisiert

Example perfect tense:

• Wir haben das Fotoalbum digitalisiert.
• We have digitized the photo album.

A rough English-friendly guide is:

• Wir ≈ veer
• digitalisieren ≈ dee-gi-ta-lee-ZEE-ren
• das Fotoalbum ≈ dahs FO-toh-al-boom

A few useful notes:

• w in German sounds like English v
• z in German sounds like ts
• the r at the end of -ren is usually soft in many accents

Possibly, but it is not exactly the same in every context.

• digitalisieren means to digitize, that is, to convert something into digital form
• scannen means to scan

If you are making digital copies by scanning the pages, scannen may fit the situation. But digitalisieren is the broader term and is often the better choice when talking about converting something into a digital format in general.