In Nahw a person needs to master Ajrumiyyah, Qatr al Nada and then Alfiyyah Ibn Malik.
The main thing is to start with a basic explanation and then move onto the detailed ones.
Practice is most important so don’t just make it theory. Insha’Allah links to books will be posted as well but for now the best explanations are:
- Doctor Ayman Amin Abdul Ghani from Egypt is superb and has a basic sharh on the poem and then the text in depth. Both can be purchased from Egypt.
- Qatr sharh: Sharh Abdullah Fowzan.
- Alfiyyah sharh: Ibn Aqeel
You could also start with Mulhat Iraab instead of Ajrumiyyah
Good supplements are:
- Nahw al waadih
- النحو المستطاب
Lots of exercises for practice.