@Mr.Y Well I guess you can pick up any of the university physics 101 books. If you know calculus (and even if you don't, I guess). You might also benefit from edX, Coursera etc. websites that have courses on different topics.
@alarge My fear is that these books only work the simple exercises and leave me at the end of the chapter with harder exercises.Also I don't want to start already studying at university level,I want to be sure that my background will be okay when I will enroll.
I am not sure what you mean.We covered every topic(last one was electromagnetism) but the problem is that I come from a classical high school (latin,greek and so on) so I don't know if I've covered them well enough.However my math skills are decent from what I can say.
@Mr.Y Well the physics is usually the same, the distinction is typically that in university you use calculus, and in high school you learn some of the formulas by rote (like constant acceleration and what not).
@Mr.Y With all the technology available nowadays, I'd go with one of the online courses I recommended earlier. Or maybe use the textbook that they use. Or look up whatever university you like, and see what they use in physics 101. There's not that much of a difference really.
@StanShunpike Well...it's not exactly the same. The "partition function" of QFT is not the same as the partition function of statistical mechanics. The QFT partition function is still a "normalization" because observables are computed as $\langle\mathcal{O}\rangle = \frac{1}{Z}\int \mathrm{e}^{\mathrm{i}S[\phi]}\mathcal{O}\mathcal{D}\phi$, but the $\frac{1}{Z}\mathrm{e}^{\mathrm{i}S[\phi]}$ is now no probability density anymore (for one because it is complex).
The actual meaning of $Z$ is more that of a transition amplitude, like the path integral in usual quantum mechanics.
I feel like I learn better from books rather than looking videos (I guess this is subjective)...the annoying this is that there's really no problem for the choice of math textbooks because there are thousands of types of math books,but for physics there's always one size fits it all...
@Mr.Y Well that still doesn't really change what I said: look at the textbooks they use and see if one of them might fit your liking. Or you can look up some of the older classics, but picking up Landau&Lifshitz for intro purposes might be a bit of a rough ride.
@Alarge Okay,I will do that.One last question:is there not at all a physics textbook with a flavour for problem-solving techniques ? Thanks for your time .
@Mr.Y Physics books put emphasis on problem solving pretty universally. That said, I'm not sure if there is one that would just list the different techniques as it is all quite varied. For intro physics (and this applies more generally) all you need is calculus-level knowledge and math-wise you're pretty much set.
