Entry level software engineer thinking of moving from Dallas to England. Advice?

This is something I'm partially considering doing, and I want to just find out everything I should know before moving. My plan would be to work my current job until mid-late next year (giving me 2 years of experience), then start looking for work (My current title is Software Engineer) somewhere in England where I would work for a few years and travel all over Europe while working. The job market is great here and real estate is cheap, so I realize this may not be a great move financially, but I am okay with that, and am really wanting to travel the world at this time in my life.

Reasons for moving:
- Ability to travel all over Europe fairly easily and without much cash.
- More vacation time allowing me to travel more
- Closer to family (all family, except for my Mom, Dad, and brother, all live in England)

I'm 25 years old, graduated from college last year and working my first full time job for the past 9 months. Went to college and have worked near home, so have never lived away from home, but travel A LOT as a child with my family.

I'm not looking for any specific information, just some general posts about what I should prepare for when moving to a different country, what would be a good way to land a job there, and what I should consider before actually deciding I want to move.

Thanks in advance.