After leaving Goldenrod city, I headed out to National Park and en route to there, I fought a few trainers. Upon arriving, I took part in the bug catching contest, trained my Croconaw there and caught a Pinsir at lv 13 and won the contest, earning me the Sun Stone. After that, I beat a few trainers at National Park and fought Sudowoodo and easily caught him after paralyzing him with Flaafy, though I will not be using him. After that, I headed to Ecruteak and defeated more trainers along the way and my Croconaw finally reached level 30, allowing him to evolve into a Feraligatr. I'm currently in Ecruteak City as of this post.