I would suggest you go back to page 1 and read from the start just like we've all done.
There are some very interesting posts in this thread with lots of information you may want or need... however! there are some posts you may want to just ignore... use your better judgement to filter out the posts you think are irrelevant to cut down on your reading time if you are in a rush...
best of luck... (there are many posts answering your questions)
edit: you've just posted befor me.... I too have quite a slow computer but honestly I would try read as much as you can, once you start reading you'll want to continue..