You probably came here already knowing how to code but you also might not none the less you can never know everything all the time
If you have any questions or doubts here are some resources of knowledge for you:
- Unity Documentation – Everything you will ever need to know about Unity and how things works behind the scenes lies in the documentation you should check it out first every time you work.
- StackOverflow – The largest site for questions and answers. You can find almost any of your problems you are facing right there. be sure someone already stumble upon that mess and found a solution for you.
- Unity Answers – Just like Stack Overflow there is a unity version for it. A bit less crowded but ultimately active community and all the answers and related to Unity in contrast to Stack Overflow.