Transitioning advice most important week of my life comingup

I'm going to come out to my parents hopefully on Wednesday, and start my transition as soon as possible after that, but I have several questions.
1. What kind of doctor do I have to see to begin?
2. What kind of job would I be able to do while transitioning?
3. Does anyone know any companies with an anti-discrimation policies for gender identity.
4. General advice as well please.