Isn’t learning grammar with an online guide kind of the thing same as studying it in a book? If you don’t enjoy studying grammar you don’t have to do it.
I think this is definitely a great alternative. When you notice a certain pattern you can look it up in a guide like Tae Kim or Imabi.
If you want other resources to learn grammar I suggest Wasabi, which might not be the most complete and accurate grammar guide, but is very simple and easy explained, so I think it’s good if you want to just have an idea of the basics of grammar (which I suggest before throwing yourself into reading, especially if you don’t have experience in language learning).
Another way you might enjoy is using an app like Bunpo or watching youtube video lessons A list of some Youtube channels that might help you