advice?

i DOS in about 12 months now. I have looked at Skillbridge opportunities (a handful). I haven't formally applied yet since i don't really understand when i can since i PCS in a month and keep getting told i need to wait until i get there to officially start this process.

Also, feeling a bit lost. As i want to skillbridge into something outside of my careerfield (business/finance) as i am currently intel. Any and all advice is appreciated.