Thanks A2A.
As you have not stated what kind of background you have I will assume that it is average. I believe that there are some things that your should know before starting college.
- Know your editor – Know at least one editor. It can be Eclipse and Netbeans. Also know how to run programs with notepad and cmd.
- Know at least one version-control service- I would suggest that you know how Git works. Git is very useful to keep track of your code.
- Browse through Coursera and edX- There are tons of online courses that you can take to complement your studies at college. Just don’t go overboard and drop your CGPA.
- Practise healthy coding habits- Lean to document your code. It will help you in the long run. Also give sensible variable names. Please.
- Know about different sites that will help you in debugging – Go through sites like Tutorials for SAP Payroll, ASP.Net WP, PouchDB, MFC, SAP HR, Yii, Clojure, Aurelia, CoffeeScript, CPanel, Laravel, SAP Webi, MS SQL Server, pinterest, Indian Polity, Teradata, Windows10, Stack Overflow. T