>>12842093The problems are notoriously tedious and many of them are not very helpfull for understanding the contents of the chapter, I think this is where the book is hard.
Jackson also tends to do some derivations in painstaking detail and then suddenly skip over two pages of algebra by writing something like "we can easily see that" which is sort of annoying when looking up a derivation, but good practice for yourself.
It covers a lot of topics, but a lot of it is honestly not very usefull unless you are going into some very specialized branches of physics. It's starting to show it's age, some of the calculation methods and approximations used are frankly pretty much never used any more with the access to computing power and numerical methods that are available.