is it necessary to sign up a training class for IELTS english, like, necessary, training, through

清晨漫步

my english level isn't very well,just go through cet 6 but score is not high ,i'd like to take a training lession for spoken english  but my pocket is poor ,i want to ask how to improve my oral english level exept signing up a training lession.if sign up,which one is high cost performance.
  thank you!!

清晨漫步

thanks you for comment!  i confess my english is poor but i will make effort to do it better!