Here is a video explaining the moves of the song Sundari Neeyum Sundaran Njanum by Ilayaraja.
Below the video you will find the Guitar Tab, Western Staff Notation and Swaras for the song, with the gamakas included in the notation. Towards the end of the page are the chords (for now, simple chords. I will be uploading a more detailed Jazz worthy version of chords soon).
Raga Kedaram is based on the Raga Shankarabharanam, which uses the same notes as a Major scale. In this example, the C note has been taken as Sa, giving us the notes C D E F G A B C to play with (although Raga Kedaram will not need the A note, the Dha).
The guitar used in the video is a Japanese made Nylon string guitar, the name of which I am unable to find. Yamaha C40 (Amazon.com, Amazon.in) will be a good economical Nylon string guitar if you need one.
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Charanam Swaras for Sundari Neeyum (Raga Kedaram)