Take the extra time when preping the floor. Make sure to use floor patch on any cracks or bad spots, as these will telegraph thru the vct quickly.Make sure it is clean of debris, small rocks, dust and any oil stains and such will keep your vct from bonding right.
You might already know this, but here are a few tips.
After cleaning and prepping the floor, measure and divide the floor into 4 quadrants. Use a chalk line to make straight lines. Only glue one..or 2 quadrants at a time, depending on your ''laying speed''.
Biggest tip..
After gluing WAIT until the glue gets tacky.DONT use a fan to help speed up drying..this will only dry the top of the glue, while the bottom will still be wet. Put your hand on the glued floor...if glue does not get on your hand..it's ready. Use a heavy roller to roll after instalation. OR pound each tile with a rubber hammer. I do both most times.
You can heat the tiles with a heat gun, or torch...Then it cuts like butter with a utility knife(only needed on crazy cuts and curves.) Just score your straight cuts and break tile. If you measure right, you should have equal size tiles at all perimeters. Try to resist the urge to start on a straight , long wall, and start in the center. It will make for a nicer job.
You probably knew this already, but if not, There ya go! Happy laying!