Here are some of the websites for English and writing well that I use. You may find them useful too whether you are a serious writer or just starting off.
- The right answer. Right on top. Experts like us can vote on posts, so the most helpful answers are easy to find: https://stackexchange.com/
- When you are looking for just the right word: visualthesaurus.com
- Grammar hygiene: Grammarly.com
- When you want to go deeper into a sentence: https://linguakit.com/en/part-of-speech-tagging
- A simpler version of sentence analyser: https://parts-of-speech.info/https://parts-of-speech.info/
- The blog of Ravi Iyer, Storytelling Coach and Adviser to senior leaders. Lots of valuable lessons here that will help you in your work and leadership: http://storyrules.in/