He says he learned the ropes with some of the best strikers on the planet at the San Siro after working with some of football's biggest names during his time in Serie A.
Martins: "I learned a lot from playing with people like Ronaldo, Adriano and Christian Vieri. They are great strikers and I really enjoyed working with them. No matter who my partner was at Inter Milan, I seemed to have a good understanding with them and played well.
"Whoever my partner is at Newcastle I hope to do the same. I am confident and feel that everything is going to be OK. I am still very excited about being a Newcastle player and I have been waiting to play again and score some goals.
"It was great to play in the Champions League with Inter - Europe is very important. But at Newcastle we have the UEFA Cup and I feel that will be a very good challenge for me. The UEFA Cup has a lot of good teams in it and I am looking forward to testing myself against some of the best players in Europe.
"I really enjoy playing in European competition."