In reply to Drew52:
Summer Alpine is generally best August / September as all of the snow has melted by then. Right now some people are still doing ski touring.
Back of Louise and other rock climbing routes are Late August / September as well. Stuff closer to Banff in the front ranges will be in condition earlier (Yamnuska is just about being climbed now I think although I'm still cragging in the valleys)
In terms of guidebook for the Lake Louise area you need 2 at least:
Selected Alpine climbs in the Canadian Rockies...okay but not comprehensive
Sport Climbs in the Canadian Rockies - You want the one with "Updated again" on the cover. Although it is a sport book it also has the trad stuff at Back of Louise in it for some reason.
There are a couple of other books - Bow Valley rock and Banff rock but one is out of print and so like gold dust (BV rock) the other has been promised for years (Banff Rock)
Ghost rock if you want to go in there.
Also don't forget the Bugaboo's (another guidebook) which are also fantastic.
A good website is
http://tabvar.org/ which is The Association of Bow Valley rock climbers.
Lake Louise it's self is pretty isolated - just a hostel, a big hotel and loads of tourists. I would plan on staying in Canmore to be honest if you're going to be there for a while. More restaurants, more activities; more access to other places. Plus it's got more of a climbing community to check on conditions etc.
Must go back to work... but can type more later.
Mark S.