New Ford Ka stalling my fault or car fault?

I got a brand new ford ka 2014 last week. I passed my test a year and have been nervous to drive. Initially everything was fine but then I began to stall (may I add that I stalled one time during my entire course of lessons). It has stop start technology and after the stall I was really struggling to get going again as it seemed to cut out. I was blaming myself and everyone told me that it with new cars until you get used to it. I turned start stop off and this helped- less stalling incidents and I was able to restart and get going first time when it did occur. I had a couple of
People try the car and they said that it seemed to need extra revs when emerging from junction etc so I did this and it seemed better for a while. I went out driving last night and two warning lights were on for the entire journey and when I was stationary with the engine running. These were; injection system failure and engine oil sensor failure. When I started up after checking these out in the manual they were gone again.

I'm trying to. Get a hold of the dealership to have it looked at but I would like to know if these faults could contribute to the stalling problem as I'm getting a bit of a complex about driving. I'm really trying hard to fix what I'm doing wrong but can't seem to find a solution. It might just be me but I would like to know either way.

Added (1). I only have the stalling problem when emerging or starting at traffic lights and not consistently. I can start of the car for a journey without a problem and my gear changes are smooth.

Added (2). Actually I only have the problem when I come to a complete stop and need to get moving again.

Its your fault you should practice changing gears, or you could have just bought an automatic one

The car should be under warranty so take it to the ford dealership and have them check out the vehicle. Mention that you got two warning lights so they can check that for you. The computer that resides in the vehicle should store error codes when these warning lights appeared. They could them check for any problems which should be covered under the warranty.