Weight!!

Im 22 and really want to lose some weight! I had a emergency c section with my daughter almost 3 years ago have had alot of trouble with it and now iv got to the point where I just wanna lose some timber :(!!! Any tips?? I try and walk as much as I can altho I do drive sometimes not often tho! I cant afford to do weightwatchers slimmin world or juice plus etc so has to be somethin I can try by myself!! Any tips would be extremely helpful ladies :)