Hi Frank, it looks like you have caught buyeverythingasitus. I really, really suffered with it when I first started collecting (and still do now to a degree), sorry it seems to be contagious!
I pretty much did as you are now, bought things I liked and tried to get my head around the grading. It helped for sure but I also feel I probably did not spend my funds as wisely as I could. Going to the monthly coin fair has helped a lot as you get to see so many different coins in all grades and prices brackets.
I am still way way off all of the experts on here and still make plenty of mistakes but as I posted when you joined it really is worth saving the £10/£15 buys unless you find a cracker that others have missed and go for some higher grade (EF) stuff. I have stuff I bought early on that I really liked at the time but have found myself wanting to upgrade it. Also what I considered EF has changed as time has gone on. I see coins on some of the facebook groups I would have bid on in the past that I know just let them go by.
People like Paulus, Coinary, Rob (and all the others that hae offered my advice so far!) are all really helpful so do not be afraid to get opinions on stuff before you buy.
It looks like you have made a nice start to your collection but once you get a really nice gEF to Unc coin in your collection you will want more like them Keep the pics rolling in!