Your question is very unclear.
In the project panel, you can find the in and out points of a footage in some of the columns of the listbox (see screenshot). If those columns don't appear, right click the listbox title row and recheck the in/out points columns.
In the timeline panel, to modify the in/out points of a layer, hover the cursor towards the start or end of the layer until it becomes a left-right arrow, then click and drag.
If it's something else, try give more details...
ps: forgot the screenshot:
And yes, i forgot, there is also an inpoint and an outpoint column in the timeline panel, which you can show/hide by the same method as for panel panel (right click the title row).
If you're new to AE, just opening it up and poking around is going to cause more frustration than it's worth. I highly recommend going through this first. That's the best (free) way I know to get up to speed quickly with AE.
Yep! youre absolutely right, I was wrecking my brains out and yet I'm very used with Premiere-Pro. I took your advice and its already a great help!
all the best.