This suggests that you're not an expert. Therefore, it is wise to just stick to what the experts write, in articles such as this. That's what I do. Cryptography is a very complex subject; non-experts who give advice without knowing exactly why they are saying what they're saying are contributing to the problem, so please avoid doing that.

I used to be very confused, too, and after learning something about it, I wrote that page. Almost didn‘t finish and publish it when tptacek put his page up, but by that time I had already invested most of the effort, and I wanted to be less terse.

Edit: actually, I think I would recommend everyone interested in this subject to read at least a few texts by actual experts (professors in cryptography and people who work for high-stakes security businesses), to get a taste of what it's all about.