Am I understanding this right?

So I'm new to currency trading and right now I'm just messing about with a demo account on IQ Option.

I have ZERO experience in trading and I'm pretty bad at math, so not off to a great start, however I do have some common sense.

So right now on my demo account, I started out by looking at the financial times. I seen that an hour ago there was some news about the GBP slumping heavily. I checked the charts and low and behold it took an almighty all time 30 day low.

So I seen this as a good "common sense" move to put a "call" on the GBP moving up within the next week.

I know this is very basic and I know there's A LOT of other factors to consider, what with Brexit talks and news due to be released tomorrow it may have been an amateur move.

The question is, fundamentally and grasping the basic principles am I getting the overall concept right?

Surely with an all time low in 30 days it's only reasonable to presume that it will increase within the next week? Is that a safe trade? I know I can still lose but I'm trying to understand if my line of thinking/logic is correct or if it's flawed?

Any advice is much appreciated.

Also where's the very best place to start for a complete beginner who is terrible with math lol?

Am I understanding this right?