Learn about how Java manages memory through heap space and garbage collection. Understanding memory allocation can help avoid memory leak in Java programs.

Learn the difference between names and IDs of HTML tags. Also know why it may be important to set their values different from each other.

Learn how to create a table in mysql with a name passed on as a parameter. This may be useful when you need to create tables using stored procedures.

Here are a few useful MySQL commands for common routine work related with database management. I keep these statements on my desk as a quick reference guide.