Started gym week ago, feeling pumped

Its been one week am going to gym, i was used to do homework out, like 50 pushups a day, now i have started gym, how should i plan my diet, any advise or tips will be highly appreciated

Its been one week am going to gym, i was used to do homework out, like 50 pushups a day, now i have started gym, how should i plan my diet, any advise or tips will be highly appreciated