You can drag Tables AND Fields onto your Form using the Database Explorer: Try it !
By using bookmarks in the code editor you can jump around like you need it.
Set bookmarks by pressing ++"0".."9" and jump to them by pressing +"0".."9". (see Configuration help when you use other keyboard settings than the default).
In the Object designer you can jump to the parent of the highlighted component by pressing .
You can easily change the "Source" of your forms by pressing Alt-F12 !