Which oiler to use

[Terrinecold]

Hello,

I am starting with learning to lubricate watch movements. 
I bought a set of Bergeron oilers. 55-710 on Amazon there is a yellow green blue and red. 
I just have no idea which to use where and when. 

[ManSkirtBrew]

My personal preference is to use the finest one (red in your set) for 99.9% of what I do. I can always add more oil if necessary, but it's harder to remove too much.

I use the largest oiler to transfer lubricants from their bottles into my oil cups.

[Zendoc]

I also find the red oiler in this set the most versatile size, but for cap jewels, I’ve found that the finer, Bergeon ergonomic oiler, 7013-N, gives me greater control over the amount of oil I’m depositing and gives me a more consistent drop size.  The yellow oiler is great for use as a probe - nudging pivots into place etc.  I’m about to file one down into a tiny tool to move the collet in adjusting beat.  Very handy, just too chunky to use as an oiler.