Am Abend speichere ich die Datei am richtigen Speicherort und schließe dann den Browser.

German main clauses follow the verb-second rule: the finite verb must come in the second position.

Here, Am Abend takes the first position, so the verb speichere must come next:

• Am Abend | speichere | ich ...

If you started with the subject instead, you would get:

• Ich speichere am Abend die Datei ...

Both are correct, but the emphasis is slightly different.

In both places, am is the contraction of an dem.

But the meaning is a little different in each phrase:

• Am Abend = in the evening
• am richtigen Speicherort = at/in the correct storage location

So the same form am can be used in both a time expression and a place expression.

Both are direct objects, so they are in the accusative case.

The difference comes from the gender of the nouns:

• die Datei → feminine
• der Browser → masculine

In the accusative singular:

• feminine die stays die
• masculine der changes to den

So:

• ich speichere die Datei
• ich schließe den Browser

Because the adjective comes after dem inside the contraction am = an dem.

The full phrase is:

• an dem richtigen Speicherort

Since Speicherort is masculine and the phrase is in the dative singular, the adjective takes -en after the definite article:

• dem richtigen Speicherort

That is a normal weak adjective ending.

German prepositions like an can take either:

• dative for location
• accusative for direction/movement toward a destination

Here, am richtigen Speicherort describes the location where the file is stored, so German uses dative.

Very roughly:

• am richtigen Speicherort = at/in the correct location
• an den richtigen Speicherort would sound more like movement to that place

In this sentence, German is treating it as a location, not as physical motion.

Because the subject is the same in both parts of the sentence: ich.

German often leaves the subject out in the second coordinated clause when it is obvious:

• Am Abend speichere ich die Datei ... und schließe dann den Browser.

The fuller version is also possible:

• Am Abend speichere ich die Datei ... und ich schließe dann den Browser.

Leaving out the second ich sounds natural and avoids repetition.

Because in the second part, the finite verb comes first in that clause once the repeated subject is omitted:

• und schließe dann den Browser

If you include the subject, you get:

• und ich schließe dann den Browser

If you want dann first, that is also possible:

• und dann schließe ich den Browser

So the sentence is not using the only possible word order, just a very normal one.

Because und is a coordinating conjunction, and in a simple sentence like this German normally does not use a comma before it.

So this is standard:

• ..., und schließe dann den Browser.

A comma before und would usually only appear in more special situations.

Yes, often you could.

• am Abend = in the evening
• abends = in the evenings / in the evening

A useful tendency is:

• am Abend often sounds more like a specific time frame
• abends often sounds more habitual or general

So:

• Am Abend speichere ich die Datei ... = this evening / in the evening
• Abends speichere ich die Datei ... = in the evenings / as a routine

Context decides the exact meaning.

They are both 1st person singular present tense forms:

• ich speichere from speichern
• ich schließe from schließen

So the pattern is:

• ich speichere
• ich schließe

The second verb, schließen, is an irregular/strong verb in some forms, but ich schließe is the normal present-tense form.

Because they are nouns, and all nouns are capitalized in German.

So in this sentence:

• Abend
• Datei
• Speicherort
• Browser

are all capitalized because they are nouns. This is one of the most important spelling rules in German.