Cut in the edges. This means that when you roll up to the edges you will get full coverage. You need to cut into the ground, ceiling, any internal angles and where you change paints or colours. External edges do not need to be cut in.
I love to cut in, and my partner loves to roll, it is really a match made in heaven!
Use a long nap roller to roll your brickwork (you want lambswool ideally, but you can use synthetic) and roll in one direction (up and down). The “nap” refers to the thickness of the material on the roller and therefore how much paint the roller will hold.
If you have brickwork with a deep rake (this mean deep crevices) you will want to roll it on on a 45 degree angle and lay it of vertically. This will help get all the way into the mortar in between the bricks.