Ferguson's temporary appointment came as a surprise since he had been out of management for three years after leaving Alloa Athletic.
Clyde and Kelty Hearts were the other clubs he coached, having had a spell as player-manager at Blackpool.
"I know what this club needs," he added. "I want what's best for Rangers Football Club.
"I got an opportunity I never thought I would get, and I've enjoyed every single second of it. Some of the results I've not enjoyed, they have hurt me. I enjoy the challenge of it, because it is a big challenge.
"I always will back myself. I might not be everybody's cup of tea, but I know I can do the job alongside the staff that I've brought in, but we just need to wait and see."
The head coach's role is one of the moving parts currently at Ibrox with the club confirming this week for the first time that they are in negotiations with American investors, including the San Francisco 49ers, about a possible takeover of the club.
And Everton director of football Kevin Thelwell will move to Rangers to take up the role of sporting director this summer.
Ferguson plans to meet with Thelwell and commented: "He's an experienced guy, he's been about a lot of clubs, a lot of big clubs as well, so I think it was an appointment that was needed.
"When we sit down I'll be honest and I'll be clear."