Pronunciation Rules.

1. When the letters k, t and p precede m or n or l, they are pronounced (and romanized) as ng, n and m respectively. If the letter they precede is an l, then the l also changes to an n sound.
If I had learnt this rule early, I would have never tried learning Korean through romanization. It took me a long time to realize that what is pronounced as im ni da, is actually written as 입니아.

2. l is pronounced as an n when immediately preceded by any consonant except l or n.

3. If a word ends in a consonant and it is not followed by a particle, or the verb ' ieyo' then the last consonant is not released.