Pruning a young apple tree

Evening
I wonder of anybody could give me some advice on best way to prune this apple tree , when i purchased the tree some of the branches were almost bent and twisted , see pics , also when i had a few apples on the branches were sagged alot , i think it needs a good pruning during winter to strengthen the branches . Any help ?
Thanks in advance

 

Oh my, yes you need to shorten those long whippy growths, but before you do consider putting in more support and training it into an espalier, or a fan. That said I would remove some of the lower branches completely, and shorten the others by half at least even if tied in to a support. On another note I would not have let such young tree bear fruit. It needs to establish properly first.
Check out the RHS website for more advice on formative pruning.

 

Thanks for the reply , im unsure exactly what you mean, i thought fan training was on a Wall ? , which branches would you lop off and would you take the lower ones completely off to the main trunk ?
Re more supports , how shouldni go about this ?
Yeah as you may guess i dont have a clue