1. Transperent intelisense popup: If the intelisense popup of the IDE is hiding your code & you want to see the code beneath the popup then you can press & hold Ctrl key which will make the popup transparent.
2.Columnar selection : If you want to select column wise in the IDE then press Shift + Alt key and then select the text using the arrow keys. It will select in column wise.
3.Change casing : If you want to make any string or selection UPPERCASE then select the text and press Shift + Ctrl + U keys in order. Itwill make the string Uppercase. On the contrary if you want to have the selection lowercase then just press the Ctrl + U keys while selecting the text.
4.Rename variable : While changing any variable name don't ignore the small bar appearing below it. Because it will give you option to rename all the instance of the variable present in the code. So click on the small arrow beside it & select rename instance option.
5.Search Hidden Text : While searching some text in the code don't forget to checked Search Hidden Text checkbox in the find & replace window if you want to search in the complete page otherwise it will not search the collapsed segment in the code.