Improve your pronunciation with 42 Days of Pronunciation. In this series, I devote a video a day to one sound in the International Phonetic Alphabet (American).
That means that if you watch the whole series, you’ll know every sound in English. Your pronunciation may not be perfect, but at least you’ll be aware of what sounds exist and which ones you need to work on.
For each sound, I take a lot of examples, including single words and complete sentences that use those words. I introduce them slowly and clearly, so you have time to listen and repeat.