The word “begin” is pronounced as /bɪˈɡɪn/. The “b” is pronounced softly. The “i” is pronounced as a short “i” sound like in “sit”. The “g” is a soft “g” sound. The “ɪn” at the end is pronounced like the word “in”. For example, you can say “Let's begin our journey.” When pronouncing it, make sure to enunciate each syllable clearly. Practice saying “begin” several times to get the pronunciation right.