Pronunciation: Key to pronunciations (British and World English dictionary)

Ключ к произношению английской транскрипции (Британский и Всемирный английский словарь)

The pronunciations given represent the standard accent of English as spoken in the south of England (sometimes called Received Pronunciation or RP), and the example words given in this key are to be understood as pronounced in such speech.
Symbol & Example.

1. Consonants
The letters b, d, f, h, k, l, m, n, p, r, s, t, v, w, and z have their usual English values. Other symbols are used as follows:

ɡ   as in   get
tʃ    chip
ʤ    jar
x    loch
ŋ   ring
θ    thin
ð   this
ʃ    she
ʒ   decision
j   yes
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2. Vowels

Short vowels
a   as in   cat
ɛ    bed
ə   ago
ɪ   it
i   cosy
ɒ   hot
ʌ  run
ʊ   put

Long vowels
ɑː   arm
ɛː    hair
əː   her
iː   see
ɔː   saw
uː    too
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3. Diphthongs
 
ʌɪ   my
aʊ   how
eɪ   day
əʊ   no
ɪə   near
ɔɪ   boy
ʊə   poor
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3. Triphthongs
 
ʌɪə    fire
aʊə    sour

In multisyllable words the symbol ˈ is used to show that the following syllable is stressed, as in /kəˈbal/; the symbol ˌ indicates a secondary stress, as in /ˌkaləˈbriːs/.

(ə) before /l/, /m/, or /n/ indicates that the syllable may be realized with a syllabic l, m, or n, rather than with a vowel and consonant, e.g. /ˈbʌt(ə)n/ rather than /ˈbʌtən/.

(r) indicates an r that is sometimes sounded when a vowel follows, as in drawer, cha-chaing.

(http://oxforddictionaries.com)