Canham, who scored four goals in 29 appearances for the Magpies, claims his performances have improved massively since joining from Team Bath.
He told County's official website: "It has been a real experience for me coming back into full-time football and it has been a hugely enjoyable learning curve for me.
"I'm getting better on the ball, which was an area I needed to improve. With Team Bath you could get away with having a bad touch, but in League Two you can't."
Source: Team_Talk