Losing weight for my health.?

So recently i gave blood, went to the doctor for bronchitis, and had a tooth removed and all three times my blood pressure was higher than normal...well it was kinda an eye opener saying i need to lose weight before diabetes or something worse..I need help. I know i dont eat well because i dont know what to eat that doesnt cost a fortune..im always working and when im not i just like to relax....i need help.