Where to start with SQL with no experience in any coding?

Question

Where should I start?

Answer 1

SQL is used to Manage data into RDBMS.. there is no need to be specific coding background to understand SQL..
SoloLearn is the best platform to start for the first time but it's not sufficient to explore in deep.
with SoloLearn you must try W3school for basics of SQL

this book is also great

Ivan Bayross
SQL, PL/SQL the Programming Language of Oracle

Answer 2

Is important know about database structure before study only SQL, because you will understand all the relations between tables, keys,scheemas,views,users,DBMS....understanding this will help you a lot because SQL is a language that will manage this informations in a database.
Search for Database project books and Oracle documentations.