I managed and trained technical writers & editors for 7 of the last 10 years, and can tell you that Grammar Girl is an amazing resource! It's not a substitute for Grammarly, as it doesn't check your writing for you, but it's a nice supplement for when Grammarly suggests a change that you want/need to understand better.

It really digs in to the "hows and whys," and does so in a way that's entertaining and easy to understand.

I often provided Grammar Girl articles as reading assignments when I could tell someone was struggling with a certain concept, and it ALWAYS helped them. Here are a couple that I'd assign most often:

• https://www.quickanddirtytips.com/education/grammar/serial-comma

•https://www.quickanddirtytips.com/education/grammar/formatting-vertical-lists

• https://www.quickanddirtytips.com/education/grammar/which-versus-that-0

• https://www.quickanddirtytips.com/education/grammar/active-voice-versus-passive-voice

I hope this helps! Good luck and have fun with it! :-)

That's fantastic, but give head to Stanley's comment about Grammarly. It will help you in the long run!

Great choice to use Grammarly to help you out. Well done on the progress.

You do what you have to do. A community is excellent at creating confidence in you. All of us here will support you and guide you. Almost no one will bash you!

Since you are using Grammarly you will notice a big difference in your writing skills in time. If you pay attention to the problems typing and try to fix them so you don't have so many mistakes it will also help you out. Time and patience is key here so take your time.
Douglas