No, because you could be learning that today and get a head start on your own future that way. It's not that hard to understand and once you've seen how the clock ticks from the inside it becomes a lot easier to build other clocks.
Lists vs resize-able arrays is a very old debate, both have their places, it all depends on the problem you're trying to solve which one is the most appropriate. If you code your stuff in a not too stupid way (say using a macro for your accesses) it's trivial to replace one approach with the other in case you're not sure which one will perform better.
Lists work well when they're short and you use a an array of pointers to the beginnings of your lists and maintain a 'tail' pointer for fast insertion in case inserts are frequent. If you use resize-able arrays you probably want to allocate a bunch of entries in one go, roughly doubling the size of your array every time you need to increase the size. That seems to waste a lot of memory, but since it is heap memory (allocated using brk) it (usually) won't be mapped to real memory until you use it, so the overhead is smaller than it seems.
I hope that's correct and clear :)