Description: This lens is my favorite lens and stays on my camera 95% of the time during portrait shoots. It's also the lens that I use the most to shoot my son. If the price tag is too high for you, I would recommend looking into the 50 1.4 lens as well. It's a great lens and much cheaper than the 50 1.2!
Description: This lens was the very first "L" series lens I invested in. It has a great focal range (it's a wide lens, but can also zoom in) and takes great pictures. If you want to invest in one lens, this would be the one I would recommend.
Description: I use this lens primarily for weddings (during the ceremony and reception). Although some photographers use this lens on portrait shoots, I don't. It's way too heavy for me and I prefer to be closer to my subjects so I can interact with them.
Description: I use SanDisk compact flash cards. I prefer to use 4GB cards so that if it gets corrupted or I lose the card, less images are lost. Don't forget to write your name and phone number on the back of each of your cards!