Is there any aspect of Chinese you want to focus on more than others? For example, focusing more on listening over reading. That can help me give better recommendations.
If you are learning traditional characters or focusing on Taiwanese accented material, I think any of these two book series are pretty good:
- Practical Audio-Visual Chinese
- A Course in Contemporary Chinese
I’m sure the most popular simplified/mainland book series equivalent is equally good. Really, most of these textbooks are quite similar in the end.
If you go through any textbook, I recommend you focus on audio via the method I outline in this post
I haven’t gone through any grammar resources. But just the AllSet Grammar Wiki alone should be a good starting point!