He then got back and fought some more Saiyans who came to earth (Nappa and Vegeta) and also wanted to destroy it, but they wanted to make a wish for Immortallity with the Dragon Ball's. Goku then almost got destroyed by Vegeta, but Gohan and Krillin came back and helped to stop him. Krillin was about to kill Vegeta but Goku told him to let him go. So they did and Vegeta went back to planet Freiza to heal up.
After Goku healed from his many injuries. He got on a ship that Professor Brief made for him and also had a gravity training device in it. Goku trained for 6 days until he got to Namek. He defeated most of the Ginyu Force before Captain Ginyu switched bodies with Goku. Goku then got his body back after he found Ginyu and his body was then again badly injured. After he healed. He went to go fight Freiza (which Freiza had already killed Vegeta [which had just turned to the good side]).
Goku then turned Super Saiyan and defeated Freiza. He then got off the planet just in time before it exploded and fell to the planet Yardrak. At Yardrak he learned a new technique called the "Instant Transmission" which could make him go a light speed anywhere he wanted to go.
He returned to earth and got a fatal heart desease. Lucky for him that Future Trunks came back in a time machine to give him the medicine needed. He then got better and took Gohan to the Hyperbolic Time Chamber to get a years worth of training in a day to become Level 2 Super Saiyans.
Goku then sacrificed his life to kill Cell but failed. Gohan actually defeated Cell later after Trunks had been killed.
Goku then took on some adventures in the other world, tieing in the other world tournament with an alien named Pikkon.
Goku then heard of the new tournament in the real world on earth and decided to come back for 24 hours. This is all I have seen and I will update it regularly.
