I love the McMillan site for the calculator. Their six-step training program looks good to me too... When I looked on the net for training tips, it seems everybody has wildly different ideas on what's best. I don't know if they're any better than the others, but I try to follow some of the pace guidelines there. I used to run all my runs at what would I guess be considered a tempo run and all these sites were telling me to take it easy and slow down.. I do a good mix of workouts, but most of the time I'm just doing easy pace runs now.
I never even got into all that stuff until the last year or so. I had been running on and off for the last 7 years maybe, but it wasn't until I signed up for a marathon last year while slightly enebriated that I've been more consistent at it. When I started running I had no interest at all in doing a marathon, it just didn't appeal to me. I also had the view that most people that sign up for a marathon only do it so they can brag about it to other people. I don't know if I'd say that now, but I bet it still holds true for a lot of people. Either way it gets people active who might not be otherwise, which is always good. I know it was making the commitment to do that race that got me logging my runs, which keeps me going out.
I never did do that marathon though . I ended up with a knee issue, probably a result of being stupid and overtraining and had to take a long time off. I still have some issues with it, but oddly enough running doesn't seem to bother it. If it hold up maybe I'll try it again by the end of the year but who knows... I find that half-marathon distance is ok, but my body is not happy doing stuff longer than that. I've been doing up to about 16km at a time and 45km a week lately, so I'll have to see if stuff holds up for longer stuff, but so far so good.
I'm not even that fast, but decent enough. I started doing little races for fun and found there's a pretty wide range of abilities there. I'm probably around 22 min or so for a 5k. I'd love to get down to 20 even which seems close, but when I look at the pace I'd have to run it looks a long way off for me.
For the people looking at the online training logs, particularly the Runnersworld one... take a look at http://www.runningahead.com (I choose to use excel and a pc-based program that works with my watch rather than an online log but I liked it when I tried it). It's my understanding that Runnersworld licensed their log from RunningAhead so it's exactly the same, the difference being that RunningAhead continues to update there's and make improvements. So that might be a better option if you're looking to get started with a log. Their user-uploaded course database is separate if you like those - both of them have quite a few courses in my area, I can't really tell which has more.