There are SO many videos on YouTube that can help you improve your English grammar (and much more!). Search for a video lesson about anything you want to study. You can start by searching for: beginner English grammar.
- How much time the video takes – 5 minutes? 30 minutes? 2 hours?
- How many people watched (viewed) the video
(1.3M = 1.3 Million = 1,300,000)
(14K = 14 Thousand = 14,000)
- When was the video put on YouTube – 2 weeks ago? 8 years ago?
If you have a problem with something specific, watch some lessons on that. On YouTube, search for English past tense (or ESL past tense); or ESL verb to be; or ESL auxiliary verbs; or quoted and reported speech (direct and indirect speech).
When you find a video you like, you can look for more videos by the same people. Many people have a “channel” – a group of their videos – that you can go to on YouTube. Examples of some good YouTube channels for English learners are: Jennifer ESL, EngVid, and Rachel’s English.