Commonapp problems faced by homeschooled / private candidates of A-levels

Hi fellas!
I am really confused regarding common-app process for home schooled students. let’s read my story and help me out.

After my 8th grade, I left my school and was home schooled. technically I was not home schooled because I am first in my family to attend college so my parents were not capable of teaching me. I used to get tuition from the most reputable teachers in my city. but I was not affiliated with any institution. however in 10th grade I got admission in a school and cleared 6 O-level Subjects. then I moved to another city and appeared in other 2 subjects privately. then i also cleared my 3 A-level subjects also privately. all my O and A level subjects were cleared through Cambridge International Examination.

Now I dont understand some of the things in common app.

  1. what school should I choose?
  2. what councilor should I have, cuz I don't have any councilor.
  3. Who will write my recommendations?

Other home schooled or private candidates are welcomed to post their experiences and problems and the most important solution to my problems.