The Midlands team regrouped this week to begin training for the 2014-15 campaign under the eye of Lambert and new assistant manager Roy Keane.
"I've got to get everybody fit for the first game of the season," Lambert told the club's official website. "That is the priority. We've got six weeks or so to get everybody fit and get them ready.
"Hopefully we will come through pre-season without any injuries. That is always my main target really. The games are good for fitness and trying to get a little bit of work into them but the main focus is to get everybody fit and be ready for that first game."
Villa will begin their Premier League season with a trip to face Stoke City.