I figured there wasn't enough information about Dravidian languages on this forum (Telugu in particular). So I've decided to try teaching you all Telugu!
So a little general information about Telugu: It's the Dravidian language with the most native speakers, spoken mainly in the state of Andhra Pradesh in South India. It's heavily influenced by Sanskrit, so there will be a lot of vocabulary in common with Indo-Aryan languages, despite the difference in language families.
I'll start with teaching the script. I'll go through it pretty quickly so we can get to the grammar etc.; I'll probably primarily use a romanization during the lessons so you won't need to know the script for them. I'll teach it anyway to help you learn about the phonology and to introduce the romanization I'll be using.
It is an alphasyllabary. Each letter represents a consonant (or a consonant cluster) with the vowel following it, represented by a diacritic. The inherent vowel sound is /ʌ/ or /ə/. Let's start with vowels.
Lesson 1 - VOWELS:
There are 18 vowels in Telugu, each with a unique diacritic. In Telugu words, you'll only see the vowel in it's non-diacritic form at the beginning of a word. Here, I have each vowel, followed by the diacritic, followed by the IPA pronunciation, followed by the romanization I will use in future lessons.
అ (inherent) /ʌ/ or /ə/ - a (I've seen it notated as either of those sounds; from now on I'll just be notating this in IPA as /ʌ/.)
ఆ ా /a:/ - ā
ఇ ి /ɪ/ - i (I've seen this notated as both /ɪ/ and /i/; I believe it is closer to /ɪ/)
ఈ ీ /i:/ - ī
ఉ ు /ʊ/ - u (I've seen this notated as both /u/ and /ʊ/; I believe it is closer to /ʊ/
ఊ ూ /u:/ - ū
ఋ ృ /ṛʊ/ - ṛu
ౠ ౄ /ṛu:/ - ṛū
ఌ /ḷʊ/ - lu
ౡ /ḷu:/ - lū
ఎ ె /ɛ/ - e (I've seen this notated as both /ɛ/ and /e/; I believe it is closer to /ɛ/)
ఏ ే /e:/ - ē
ఐ ై /ʌj/ or /əj/ - ai
ఒ ొ /ɞ/ - o (I've seen this notated as both /o/, but believe it is closer to /ɞ/)
ఓ ో /o:/ - ō
ఔ ౌ /ʌw/ or /əw/ - au
అం ం /ʌm/ or /əm/ - am
అః ః /ʌh/ or /əh/ - ah
Here's a (slightly annoying...) video that shows the pronunciation of each vowel, and the way to write each letter.
http://www.youtube.com/watch?v=ln_TXVWLqXM
As you can see, most of the vowels have a short and a long form. Just a note, words containing అః , ఋ, ౠ, ఌ, or ౡ are Sanskrit in origin, because these letters were taken from Sanskrit. ౠ, ఌ, and ౡ are very rarely used (if you looked at the video, you'll notice they skipped ఌ and ౡ, since they're so infrequently used). ఋ, however, is fairly common, and has the same sound as does ऋ in Devanagari (a syllabic alveolar trill). The vowels in Telugu are fairly similar to those in Hindi (at least, the first half of the vowels. After ౡ there are a few differences.)
Here is the first consonant in the Telugu alphabet, క /kʌ/, with the different diacritics:
క /kʌ/
కా /ka:/
కి /kɪ/
కీ /ki:/
కు /kʊ/
కూ /ku:/
కృ /krʊ/
కౄ /kru:/
కౢ /klʊ/
కౣ /klu:/
కె /kɛ/
కే /ke:/
కై /kaj/
కొ /kɞ/
కో /ko:/
కౌ /kʌw/
కం /kʌm/
కః /kʌh/