What processes are involved in moving to Alberta from the UK

Hi, I am wanting to move to Calgary at some point next year and start working. My girlfriend is currently living with me in the UK but will be leaving to head back to Calgary to study next year. She is Canadian and we have been together for over a year. I have a Masters degree in engineering and currently work for a large engineering company in the UK and have so for 13 months since graduating in 2011. I scored 73 on the self assessment test for skilled workers. Should I apply online to immigrate as a skilled worker? I did think about going on the youth mobility scheme that Canada has with the UK but don't think it would help me trying to secure a job long term. If anyone has any information it would be very much appreciated. Kind Regards, Colin