When there are a number of clips in the project, transition and effects icons may not be visible. To see them expand the timeline with the slider at the right-bottom of the window...
No need for speed changes. And utilize the horizontal scroll bar, if necessary.
Set transitions and fades after making length adjustments to clips. Otherwise, they may be lost.
To precisely find a clip edge, use the buttons... 
The timeline cursor can be jumped to any position.
Select the cursor field, type in the time, press <enter>.