Image Source: Sahityaghar.com
Click on the images below to view a full view of them. You can learn Nepali Alphabets (known as Barhakhari and how to combine characters). Nepali Script is similar to Devanagari Script. So if you learn to read Nepali, you can also learn to read Hindi words and all Devanagari words. Even you will be able to learn Sanskrit, because all these languages share the script.