How to

Hi, I just got my first dslr. It is a Canon t2i with an 18-55 mm lens.
I would like to know which settings I need to get these kinds of pictures:
http://meohmymama.blog​spot.ca …shoot-ashlee-raubach.html
Do I need to be close from the window with plenty of natural light ?
Which ISO, f and shutter-speed ?
I like that the faces are in focus but it is blury all around and the fact that it is very crisp/white. Thanks !

Welcome to POTN. Have you tried reading the "Official T2i" section? Here's a link to it that might help

https://photography-on-the.net/forum/showthre​ad.php?t=823776

Welcome. For the 'blur' I'm thinking some of the images used a grater aperture (the f setting) than what your lens is capable of. Possible f2.8 or wider.

You may want to read up on depth of field and how to manipulate with your gear.

The photo that you linked to was shot with an 85 mm lens at f/1.2 and 1/320 at ISO 640 on a 5D2. The main reason the background is blurry is because of the f/1.2 aperture, a very wide opening. Secondary reasons are the distances involved - from the subject to the background and from the camera to the subject - and the focal length of the lens (85 mm). Your lens has a maximum focal length of 55 mm and at that focal length the largest aperture is f/5.6, a very much smaller opening. So you can't recreate the same photo exactly. In order to get an out-of-focus background shoot at 55 mm, f/5.6, but be sure your subject is as far from the background as is possible. You will probably find this difficult to do inside, so take your portrait subjects outside, but avoid shooting in direct sunshine where the shadows will be harsh and suppliment the natural light with fill light from your flash.

Awesome, thank you ! I'll read about depth of field in more details. I just got the camera a few days ago and I am un the process of learning but since I am clueless it might take a while...
Also I kind of spent all my money on the camera so no fancy lenses or tripod for now. I am currently reading the camera's manual (first things first) and I found another interesting newbie thread called "Ben's Newbie Guide to Digital SLR Photography".
The reason why I asked is that I have a newborn and by the time I learn it all he will probably be 5 years old I took a few great shots of him in automatic mode but I am very impatient to try manual. So far, those din't turn out great.
So thank you very much for you advises. It helps a lot !

Here's a great place to start reading:

https://photography-on-the.net/forum/showthre​ad.php?t=414088

And then, pick up the book "Understanding Exosure (Third Edition)" -- it is an invaluable resource -- buy it, read it, and keep it in your library!