Definitely do an apprenticeship (or pre-app for that matter) while you are still young. I've been in the trade for the past 8 years, and my current job has taken me all over the country, as I work in a couple of quite specialised fields.
If you do end up getting a electrical apprenticeship, I'd advise to try not to end up being in construction, as you won't gain a great deal of knowledge. I've known people on the trade that were cable-tying for 3 months straight. The money is awesome, but I find there is little job satisfaction in construction. I'd highly recommend Industrial (my current field). You can gain knowledge in PLC's (programmable logic control), as well as various types of machinery. I've learned a great deal more working at my current job, than my 4 years in construction as an apprentice.