This MMQB piece is the best description I’ve seen about what schemes and methods the new coaching staff is bringing to the 2014 Browns.

In a nutshell:

• Coach Pettine on Manziel: “He has a tendency to keep both teams in the game.” 
• Based on confusing quarterbacks’ pre-snap reads, the “shape-shifting” defense features players rotating jobs within the scheme.
• Keep it simple for the dumber players; partner them with the smarter “sponges,” who more often are relied upon to perform a variety of assignments.
• Don’t give the playbook to Belichick’s buddies! 
• Most defensive meetings are with the whole unit, not broken down by positional groups.
• Run a variety of tempos on offense.
• Pettine, in his first head coaching gig since his high school days a dozen years back, is studying up on those game management situations that not infrequently tilt wins into losses or vice versa.