beginnen
to begin
To make the start of something; to initiate an action, process, or state. It is often used synonymously with 'anfangen' (to start), but is considered somewhat more formal.
Der Unterricht beginnt um 8 Uhr.
Class begins at 8 o'clock.

to begin
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to begin
To make the start of something; to initiate an action, process, or state. It is often used synonymously with 'anfangen' (to start), but is considered somewhat more formal.
Der Unterricht beginnt um 8 Uhr.
Class begins at 8 o'clock.

The prefix 'be-' is inseparable. It remains firmly attached to the verb in all sentence forms and tenses and is not placed at the end of the sentence.
Wann hat die Vorstellung begonnen?
When did the performance begin?
'Beginnen' (to begin) can be used in three ways: directly with an accusative object, with the preposition 'mit' (with) and dative, or with 'zu' and an infinitive.
Sie beginnt nächste Woche einen neuen Job.
She begins a new job next week.
The verb 'beginnen' (to begin) is often used in written language and in more formal contexts, for example in official announcements or reports.
Die Bauarbeiten am neuen Bahnhof beginnen im Mai.
Construction work on the new station begins in May.
to record / take in
'beginnen' and 'aufnehmen' can both express that something is starting. 'beginnen' is general and fits many actions, courses, conversations, or processes. 'aufnehmen' is used more in fixed expressions, for example 'die Arbeit aufnehmen' (to take up work / start work) or 'Kontakt aufnehmen' (to make contact). It can also mean continuing again after a break. Learners may confuse the words because both refer to a beginning. As a simple guide: for a normal beginning, 'beginnen' is usually safer. 'aufnehmen' sounds more precise when an activity officially starts, is continued, or a connection is established.

Der Deutschkurs beginnt am Montag um neun Uhr.
The German course begins on Monday at nine o'clock.
Nach der Pause nimmt das Team die Arbeit wieder auf.
After the break, the team resumes its work.