First, it's almost always a mistake to try and read a pattern before working it. For myself, it NEVER makes sense and always confuses me. But when I go row by row, step by step, all my confusion usually gets worked out.
That said, I think "Keeping cont of pattern" is someone's shortcut to say, Keeping the continuity of the pattern stitch. This sounds like when you're binding off for the shoulders - or possibly armholes.
You can do this! We'll get you through your first sweater with flying colors.
Just start knitting and do the best you can.