Learn Hardcore German: Ich brauche einen Tipp.

Because Tipp is a masculine noun (der Tipp) and it functions as the direct object (accusative) of brauchen. The masculine indefinite article in the accusative case is einen, not ein.

What exactly is the role of brauche here and how is it conjugated?

brauche is the first-person singular form of the verb brauchen (to need). In the present tense, its full conjugation is: • ich brauche
• du brauchst
• er/sie/es braucht
• wir brauchen
• ihr braucht
• sie/Sie brauchen

How do you pronounce the ch in ich?

The ch in ich is a voiceless palatal fricative [ç]. To make this sound, raise the middle of your tongue toward the roof of your mouth and exhale softly, producing a light, hissing “h”-like noise.

Could I say Ich benötige einen Tipp instead? What’s the difference?

Yes, you can. benötigen also means “to need,” but it sounds more formal. brauchen is very common in everyday spoken and written German, while benötigen is slightly more bookish or official.

What’s the difference between Tipp and Ratschlag?