When you Install Windows first on C drive then install Linux on another Drive, linux will bydefault install Grub 2 bootloader. So when you start computer, after lenovo/dell/HP logo Grub 2 will ask you to select OS you want to boot. You have to use UP/Down arrow key and press enter to select Windows or linux.
One thing to note that Windows needs to be installed on primary partition, it cannot be installed on Logical partition but linux can be installed logical partition also. And if you use MBR then you cannot have more than 4 Primary partition but you can have many logical partition. Windows bydefault create a hidden primary partition of 500 MB (System reserved) and a C drive(Again primary) So You only have one Primary partition left for storing data. 4th partition needs to be a logical one and here you can install Linux. There is no such problem if you hv GPT.