The Bengali script, known as বাংলা লিপি (Bangla Lipi), is the writing system for the Bengali language. It's a type of script called an abugida, which means that consonants have an inherent vowel, and different vowel sounds are marked with diacritics. The alphabet consists of 50 letters in total, divided into vowels and consonants.

There are 11 vowels, or স্বরবর্ণ (Swarabarna), in Bengali. These letters represent the core vowel sounds of the language. They have two forms: an independent form used when a syllable starts with a vowel, and a diacritic form (called a কার, 'kar') that attaches to a consonant.

When you see a consonant with no vowel sign attached, it's pronounced with the inherent vowel sound of অ (ô). To change that sound, you add a vowel diacritic. For example, the consonant ক (kô) becomes কা (ka) with the আ diacritic and কি (ki) with the ই diacritic.

There are 39 consonants, or ব্যঞ্জনবর্ণ (Banjanbarna). They are systematically organized by where and how the sound is produced in the mouth, starting from the back of the throat and moving forward to the lips. This organization makes them much easier to learn.

The remaining consonants don't fit neatly into these five groups but are just as important.

Bengali also has a few special characters that modify sounds. One of the most common is the খণ্ড ত (khanda ta), which looks like this: ৎ. It represents an unreleased 't' sound that often appears at the end of a syllable.

Other important symbols include:

• ং (Anusbara): Represents a nasal 'ng' sound, like in English 'sing'.
• ঃ (Bisarga): Adds a puff of air (an 'h' sound) after a vowel.
• ঁ (Chandrabindu): Nasalizes the vowel it is placed over, giving it a sound that passes through the nose.

Now let's practice what you've learned.