Here are some links of study English

Useful links to practice pronunciation

Lower levels – moves gradually up to higher levels

Minimal pairs

http://www.shiporsheep.com/

Here is a sample of what you will find – great for lower levels –British accent.

Pronunciation worksheets

http://www.eslflow.com/pronunciationlessonplans.html

Here is a list of what is available at this site – it is a long list so you would need to click on each heading to see if it is suitable. Some worksheets are really good others are just links to other websites.

   

Level 1 and up

Vowel sounds

http://www.bbc.co.uk/worldservice/learningenglish/grammar/pron/unit1/wordrepeat1.shtml

This is a great for self study not too difficult to follow.

There are five units- listed here. Each dealing with different vowel sounds.