As long as you start the new pack of the new pill on time, there is no interruption in protection.
No. If you finished a pack of the old kind, and then started a pack of the new kind, and didn't go more than seven days without taking an active pill, then there's no need for a back up Birth Control method.
Providing you took the first pack correctly you are protected immediately.
A day one starter starts the very first cycle of her hormonal birth control method on the first day of bleeding. She is protected immediately from pregnancy since she started on the first day of her period.
You can switch forms of birth control to what is most comfortable for you. If you would like to switch birth control consult your physician so that she/he can choose a birth control pill that is right for you.
You can switch birth control pills at any time in your cycle as long as you take an active pill on the assigned days.
by using condoms or other birth control
Yes
Immediately.
My OB/GYN recommended that I take my birth control for at least a month before having unprotected sex.
talk to your doctor immediately about this
When they start having sex and want to be protected.
All of them begin working immediately if taken on the first day of your menstrual bleeding.
If you are taken your birth control daily! Well you can skip the sugar pills that is fine but if you take it daily you should be fine! and if its not the 1st month that you started your birth control if so you need to use an other form of birth control (CONDOMS)!