To develop your technical knowledge for your career you can attend seminar, workshops, conferences etc., that are related to your branch as well as other branches for example if you are a ECE student you can came technical knowledge about your core like circuit programming, arduino, etc., and you can also know some basic programming languages like C, C++, Java, etc., because most of the IT companies prefer both CSE/IT and ECE students.
You can also develop your technical knowledge by watching YouTube tutorials, latest technology news and getting updates about new invention of top MNC companies by subscribing to their YouTube channel.
For example Microsoft, Facebook, Apple, etc.
The social media sites can also be helpful for getting technical stuff. Because most of the company’s shares their inventions tech news in social media sites. You can get those information by joining to their group as well as by liking their official pages.