So these last couple of weeks, turning into months, I've been pondering whether to start a whole new career in Physics, but am still unsure of whether it's only that I want to change something in my life or whether it's my actual interest in physics. I don't want to make a bad decision (again?), so I'm gathering as much info as possible and through the help of this board's members the picture of what my options would be after being done with Physics, seems to get clearer and clearer, bearing of course the uncertainty that is inherent in any decision about one's future. But added to that, I wanted to look up some books to read to actually see whether I'm interested in physics, or whether the latter merely holds an appeal and charm when looking at it from a safe distance (aka the grass is always greener) or whether I am truly interested in it. The problem here is that I've been trying to get a hold of some books and while I've found some of them on the internet, they seem to have been of a more advanced nature, and I haven't found them THAT interesting to be honest. The thing, though, is that perhaps they weren't interesting because they were too advanced and without knowledge of the basics, it probably gets just overbearing with all the info that you don't know what to do with. So I was wondering if you could recommend me a book (perhaps those that are freely available on the internet) that would be a sort of a testing grounds of my interest in physics. I've browsed through the Introduction to Quantum Mechanics by David J. Griffiths and it is more interesting than the others, but I feel as if it is still too advanced for me to really appreciate it. Or should I appreciate it if I truly held an interest in physics? Thanks in advance, as always.