You can do simple meditation by just reading a book about it and following through. Although high-level meditation should only be learned from a master, I would say that the advices that you have in this thread are pretty efficient. Just don't try do to anything else, like meditate with music or any other New Age or whatever. Meditation is very simple, which is why it is hard at the beginning, but it is also very profound and very powerful.

One of the keys to meditation (and to most of Oriental arts) is consistent practice. If you can find supervision it is better, but you can go a long way just by practicing consistently and correctly.