My main source is Marsack's 1962 Teach Yourself Samoan, however, I am modifying the terms he uses for a linguistically savvy audience, so it must be noted that a lot of what I say is my own interpratation, so I might describe things weirdly, especially with the stress system.
Lesson 1: Phonology and stress:
Samoan's phonology and orthography is as follows. Phonemes and graphemes in parenthesis indicate loan phonemes. Phonemes and graphemes in brackets indicate that the phone is most likely an allophone (see notes)
/p t~k (k) ʔ/ <p t (k) '>
/m n ŋ/ <m n g>
/f v s (h)/ <f v s (h)>
[w j] <>
In formal speech <t> is pronounced as /t/; however, in more colloquial registers it is pronounced as /k/.
Similarly, while /ŋ/ and /n/ are usually distinguished, in some colloquial registers they are both realized as the velar.
[w j] are allophones of the vowels /u i/ before other vowels.
/ɪ i: ʊ u:/ <i ī u ū>
/ɛ e: ɔ o:/ <e ē o ō>
/a a:/ <a ā>
/au ao ai ae ei ou/ <au ao ai ae ei ou>
Diphthongs must distinguished from vowel sequences separated with a glottal stop; for example, there is the minimum pair <lo'u> "my; mine (inalienable)" and <lou> "your; yours (inalienable)".
Samoan is a mora-timed language. The stress is almost invariably on the penultimate mora. However, if the final mora is a long vowel, that mora takes the stress. The antepenultimate mora never takes stress.
Transcribe the following Samoan text into IPA, using the formal register. Mark stress.:
<Ua 'ou fa'anoanoa lava ona sa 'ou le'i feiloa'i ia te 'oe a'o o'u ui atu i Lepā i le Aso Tofi ai. Sa e alu i Pago i le tausaga talu ai?>