When installing the first row of laminate flooring, I prefer to start on a wall that is as straight as possible. Most often the wall will not be straight. First thing I do is to lay a row of planks along the wall making sure all the ends are connected evenly. Sometimes a second row connected to the first row will help it stay straight. You need to know what the thickness of the base board or quarter round is to determine how big the gap will be between the laminate and the wall. (always remember to leave a gap between the flooring and the wall for expansion and contraction) I use adjustable spacers to maintain the gap as you can see in the photo to the left. You can use the plastic spacers also.
Most of the time the first row is not going to be perfectly straight along the wall. What needs to be done if thats the case is to scribe along the wall and cut the laminate so it will follow the contour of the wall. Here in this photo you can see where I have scribed along the wall. I will cut along this line with a jig saw or table saw.
One of the easiest ways to cut the last plank in the row when you reach the end, other than to measure it with a measuring tape. Is to first make sure your first row has the correct gap where the first row starts, which is usually 1/4 inch. Then take a full plank and spin it so it is reversed in relation to the floor your installing. Lay it at the end of the row up to the wall leaving a 1/4 inch space. Then mark the plank where the last plank installed ends. As shown in this photo.
After I make the cut I can tap the board in place with a pull bar and hammer. This particular product (Lamton) allows the planks to be joined together laying flat as I tap them. Some locking systems will not work if you try to tap them together in this manner.